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                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 10-QSB

                (X) QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934
                For the quarterly period ended September 30, 2003
                                               ------------------

                                       OR

                 ( ) TRANSITION REPORT UNDER SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
             For the transition period from __________ to __________

Commission File Number 1-31398

                        NATURAL GAS SERVICES GROUP, INC.
        (Exact name of small business issuer as specified in its charter)

                   Colorado                                75-2811855
        (State or other jurisdiction of                (I.R.S. Employer
         incorporation or organization)               Identification No.)

                                  2911 SCR 1260
                              Midland, Texas 79706
                    (Address of principal executive offices)

                                 (432) 563-3974
                           (Issuer's Telephone number)

                                       N/A
     ----------------------------------------------------------------------
              (Former name, former address and former fiscal year,
                         if changed since last report)

                APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY
                   PROCEEDINGS DURING THE PRECEDING FIVE YEARS

  Check whether the registrant filed all documents and reports required to be
 filed by Section 12, 13 or 15(d) of the Exchange Act after the distribution of
                 securities under a plan confirmed by a court.

                                  Yes    No
                                     ---   ----

                      APPLICABLE ONLY TO CORPORATE ISSUERS

State the number of shares outstanding of each of the issuer's classes of common
equity, as of the latest practicable date.

                                                   Outstanding at
          Class                                  September 30, 2003
   ------------------                            ------------------

Common Stock, $.001 par value                        5,022,181
                                                 ------------------

Transitional Small Business Disclosure Format (Check one):  Yes    No X
                                                               ---   ---
================================================================================


                        NATURAL GAS SERVICES GROUP, INC.

Commission File Number:  1-31398

Quarter Ended September 30, 2003


FORM 10-QSB

Part I - FINANCIAL INFORMATION

Item 1.  Financial Statements............................................Page  1

Unaudited Consolidated Balance Sheet.....................................Page  1

Unaudited Consolidated Income Statements.................................Page  2

Unaudited Consolidated Statements of Cash Flows..........................Page  3

Notes to Unaudited Consolidated Financial Statements.....................Page  4

Item 2.  Management's Discussion and Analysis or Plan of Operation.......Page  7

Item 3.  Controls and Procedures.........................................Page 12


Part II - OTHER INFORMATION

Item 2.  Changes in Securities and Use of Proceeds.......................Page 13

Item 5.  Other Information...............................................Page 14

Item 6.  Exhibits and Reports on Form 8-K................................Page 15

Signatures...............................................................Page 16







                        Natural Gas Services Group, Inc.
                           Consolidated Balance Sheet
                                   (unaudited)
                               September 30, 2003

                                     ASSETS
Current Assets:
   Cash and cash equivalents                                         $   258,276
   Accounts receivable - trade                                         1,584,767
   Inventory                                                           2,546,683
   Prepaid expenses                                                      130,344
                                                                     -----------
   Total current assets                                                4,520,070

Lease equipment, net                                                  17,537,997
Other property, plant and equipment, net                               2,779,335
Goodwill, net of accumulated amortization                              2,589,655
Patents, net of accumulated amortization                                 120,812
Other assets                                                              79,200
                                                                     -----------
         Total assets                                                $27,627,069
                                                                     ===========

                      LIABILITIES AND SHAREHOLDERS' EQUITY

Current Liabilities:
   Current portion of long term debt and capital lease               $ 2,342,151
   Accounts payable and accrued liabilities                            1,411,129
   Unearned Income                                                       492,271
                                                                     -----------
         Total current liabilities                                     4,245,551

Long term debt and capital lease, less current portion                 6,273,100
Subordinated notes, net                                                1,393,104
Deferred income tax payable                                            1,773,202
                                                                     -----------
              Total liabilities                                       13,684,957

                              SHAREHOLDERS' EQUITY
Preferred stock                                                            3,437
Common stock                                                              50,221
Paid in capital                                                       11,183,715
Retained earnings                                                      2,704,739
                                                                     -----------
         Total shareholders' equity                                   13,942,112
                                                                     -----------
         Total liabilities and shareholders' equity                  $27,627,069
                                                                     ===========



The accompanying notes are an integral part of the consolidated balance sheet.














1





                        Natural Gas Services Group, Inc.
                         Consolidated Income Statements
                                   (unaudited)

                                              Three months ended September 30     Nine months ended Septenber 30
                                              -------------------------------    -------------------------------
                                                   2003              2002             2003              2002
                                              -------------     -------------    -------------     -------------
                                                                                       
Revenue:
   Sales                                      $   1,372,248     $   1,438,069    $   2,877,358     $   3,749,300
   Service and maintenance                          452,714           439,522        1,346,597         1,191,580
   Leasing income                                 1,874,594         1,203,793        5,040,161         3,260,060
                                              -------------     -------------    -------------     -------------
                                                  3,699,556         3,081,384        9,264,116         8,200,940
Cost of revenue:
   Cost of sales                                  1,008,771           963,035        2,155,568         2,543,287
   Cost of service and maintenance                  290,008           373,594          961,237         1,012,843
   Cost of leasing                                  545,309           329,850        1,313,093           916,149
                                              -------------     -------------    -------------     -------------
                                                  1,844,088         1,666,479        4,429,898         4,472,279
                                              -------------     -------------    -------------     -------------
Gross Margin                                      1,855,468         1,414,905        4,834,218         3,728,661
Operating Cost:
   Selling expense                                  159,870           134,786          484,421           378,456
   General and administrative expense               395,918           276,523        1,186,922           877,010
   Amortization and depreciation                    455,563           301,493        1,235,118           839,093
                                              -------------     -------------    -------------     -------------
                                                  1,011,351           712,802        2,906,461         2,094,559
                                              -------------     -------------    -------------     -------------
Operating income                                    844,117           702,103        1,927,757         1,634,102

   Interest expense                                (170,971)         (273,568)        (500,760)         (796,408)
   Equity in earnings of joint venture                 --             132,081             --             339,684
   Other income                                       1,253            15,316            2,040            17,226
                                              -------------     -------------    -------------     -------------
Income before income taxes                          674,399           575,932        1,429,037         1,194,604
   Income tax expense                               289,992           207,000          611,595           486,563
                                              -------------     -------------    -------------     -------------
Net income                                          384,407           368,932          817,442           708,041
   Preferred dividends                               30,530            31,009           92,550           106,624
                                              -------------     -------------    -------------     -------------
Net income available to common shareholders
                                              $     353,877     $     337,923    $     724,892     $     601,417
                                              =============     =============    =============     =============


         Earnings per share:
         Basic                                $        0.07     $        0.10    $        0.15     $        0.18
         Diluted                              $        0.07     $        0.08    $        0.14     $        0.15
         Weighted average shares:
         Basic                                    4,995,713         3,357,632        4,910,062         3,357,632
         Diluted                                  5,389,673         4,091,862        5,208,096         4,136,709
                                              -------------     -------------    -------------     -------------




The  accompanying  notes  are  an  integral  part  of  the  consolidated  income
statements.




2





                        Natural Gas Services Group, Inc.
                      Consolidated Statements of Cash Flows
                                   (unaudited)
                                                                               Nine months      Nine Months
                                                                                  Ended            Ended
                                                                              September 30,    September 30,
                                                                                   2003             2002
                                                                              -------------    -------------
                                                                                         
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net Income                                                                 $     817,442    $     708,041
      Adjustments to reconcile net income to net cash used in
      operating activities:
      Depreciation and amortization                                               1,235,120          839,093
      Deferred taxes                                                                602,202          486,563
      Amortization of debt issuance costs                                            48,717           48,717
      Warrants Issued for debt guarantee                                               --             42,025
      Equity in earnings of joint venture                                              --           (339,684)
      Gain on disposal of assets                                                     10,547          (15,066)
      Changes in operating assets and liabilities:
      Trade and other receivables                                                  (938,817)         246,047
      Inventory and work in progress                                             (1,000,735)        (191,713)
      Prepaid expenses and other                                                     42,958          (85,097)
      Accounts payable and accrued liabilities                                      708,971          157,906
      Deferred income                                                               174,710           74,129
      Other                                                                         (60,436)         (26,209)
                                                                              -------------    -------------
  NET CASH PROVIDED BY OPERATING ACTIVITIES                                       1,640,679        1,944,752
                                                                              -------------    -------------

CASH FLOWS FROM INVESTING ACTIVITIES:
   Purchase of property and equipment                                            (5,900,453)      (3,025,780)
   Acquisition of remaining interest in joint venture, net of cash acquired         242,753             --
   Proceeds from sale of property and equipment                                     112,500           40,000
   Decrease in lease receivable                                                     210,512           62,543
   Distribution from equity method investee                                          49,090          260,868
                                                                              -------------    -------------
  NET CASH USED IN INVESTING ACTIVITIES                                          (5,285,598)      (2,662,369)
                                                                              -------------    -------------

CASH FLOWS FROM FINANCING ACTIVITIES:
   Net proceeds from bank loans and line of credit                                2,649,811        1,853,386
   Repayments of long term debt                                                  (1,583,951)        (647,004)
   Deferred offering costs                                                             --           (250,937)
   Proceeds from stock offering, net of offering cost                                  --             12,724
   Dividends paid on preferred stock                                                (92,550)         (75,613)
   Proceeds from exercise of warrants                                               216,247               43
                                                                              -------------    -------------
NET CASH PROVIDED BY FINANCING ACTIVITIES                                         1,189,557          892,599
                                                                              -------------    -------------
NET CHANGE IN CASH AND CASH EQUVALENTS                                           (2,455,362)         174,982
CASH AT BEGINNING OF PERIOD                                                       2,713,638          512,669
                                                                              -------------    -------------
CASH AT END OF PERIOD                                                         $     258,276    $     687,651
                                                                              =============    =============

SUPPLEMENTAL DICLOSURE OF CASH FLOW INFORMATION:
      Interest paid                                                           $     500,760    $     796,408
      Income taxes paid                                                       $        --      $        --



The accompanying notes are an integral part of the consolidated statements of
cash flows.




                                       3


                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1) Basis of Presentation

         The   accompanying   unaudited   financial   statements   present   the
consolidated results of our company and its wholly owned subsidiaries taken from
our  books  and  records.  In  our  opinion,   such  information   includes  all
adjustments,   consisting  of  only  normal  recurring  adjustments,  which  are
necessary to make our  financial  position at September 30, 2003 and the results
of our operations for the nine months periods ended  September 30, 2003 and 2002
not misleading.  As permitted by the rules and regulations of the Securities and
Exchange Commission (SEC) the accompanying  financial  statements do not include
all disclosures normally required by accounting principles generally accepted in
the United  States of  America.  These  financial  statements  should be read in
conjunction with the financial  statements included in our Annual Report on Form
10-KSB on file with the SEC.  Investments in joint ventures in which our company
does not have majority  voting  control are accounted for by the equity  method.
All   intercompany   balances  and   transactions   have  been   eliminated   in
consolidation.  In our opinion, the consolidated financial statements are a fair
presentation of the financial position, results of operations and cash flows for
the periods presented.

         The results of operations for the nine months ended  September 30, 2003
are not  necessarily  indicative of the results of operations to be expected for
the full fiscal year ending December 31, 2003

(2) Stock-based Compensation

         Statement  of  Financial  Accounting  Standards  No. 123,  ("SFAS 123")
"Accounting for Stock-Based Compensation," encourages, but does not require, the
adoption of a fair  value-based  method of accounting  for employee  stock-based
compensation transactions. We have elected to apply the provisions of Accounting
Principles Board Opinion No. 25 ("Opinion 25"),  "Accounting for Stock Issued to
Employees,"  and  related  interpretations,   in  accounting  for  our  employee
stock-based  compensation plans. Under Opinion 25, compensation cost is measured
as the excess,  if any, of the quoted  market  price of our stock at the date of
the grant above the amount an employee must pay to acquire the stock.

         Had  compensation  costs for  options  granted  to our  employees  been
determined based on the fair value at the grant dates consistent with the method
prescribed  by SFAS No.  123,  our pro forma net income and  earnings  per share
would have been reduced to the pro forma amounts listed below:



                                                       Three Months Ended             Nine months Ended
                                                          September 30                   September 30
                                                         2003         2002            2003         2002
                                                    -----------    -----------    -----------    -----------
                                                                                     
Pro forma impact of fair value method
Income applicable to common shares, as reported     $   353,877        337,923        724,892        601,417
Pro-forma stock-based compensation costs under
  the fair value method, net of related tax              (7,683)       (14,010)       (23,048)       (28,020)
                                                    -----------    -----------    -----------    -----------
Pro-forma income applicable to common shares        $   346,194    $   323,913    $   701,844    $   573,397
  under the fair-value method
Earnings per common share
Basic earnings per share reported                   $      0.07    $      0.10    $      0.15    $      0.18
Diluted earnings per share reported                 $      0.07    $      0.08    $      0.14    $      0.15


4


Pro-forma basic earnings per share under the fair
 value method                                       $      0.07    $      0.10    $      0.14    $      0.17
Pro-forma diluted earnings per share under the
 fair value method                                  $      0.06    $      0.08    $      0.13    $      0.14
Weighted average Black-Scholes fair value
   assumptions:
 Risk free rate                                        4.0%-5.2%
 Expected life                                         5-10 yrs
 Expected volatility                                       50.0%
 Expected dividend yield                                    0.0%


(3) Acquisitions

         On March 31, 2003 we acquired 28 gas  compressor  packages  from Hy-Bon
Engineering Company,  Inc.  ("Hy-Bon").  The adjusted purchase price amounted to
approximately  $2,140,000.  As part of the purchase and sale  agreement,  Hy-Bon
withdrew as a member of Hy-Bon  Rotary  Compression,  L.L.C.  ("Joint  Venture")
effective as of January 1, 2003. We, as the other member  retained all assets of
the Joint Venture that as of December 31, 2002 had an unaudited  aggregate value
of  $346,511.  We plan to  dissolve  the Joint  Venture  and have  agreed not to
operate under the name Hy-Bon.  We have consolidated the operations of the Joint
Venture  beginning  January  1, 2003 and then began  recording  our share of the
profit of the acquired interest beginning April 1, 2003.

(4) Long Term Debt

         We entered  into a new loan  agreement  with our bank,  as of March 26,
2003 that  included new  borrowing of $2,150,000 in the form of a term loan with
monthly  principal  payments of $35,833  with  interest at 1% over prime but not
less than 5.25% for 60 months. The proceeds from this new borrowing were used to
purchase  the 28 gas  compressors  from  Hy-Bon.  The new  loan  agreement  also
included the renewal of our line of credit for $750,000 with interest at 1% over
prime but not less than 5.25% for one year.

(5) Segment Information

         FAS No. 131,  Disclosures  about  Segments of an Enterprise and Related
Information,   establishes  standards  for  public  companies  relating  to  the
reporting of information about their operating segments in financial statements.
Operating  segments  are  components  of  an  enterprise  about  which  separate
financial  information  is  available  that  is  evaluated  regularly  by  chief
operating decision-makers in deciding how to allocate resources and in assessing
performance.

Our segment information is set forth in the following table:



                                                                       Natural Gas
         (in thousands)       Rotary           NGE       Great Lakes     Services
                                Gas          Leasing     Compression      Group          Total
       Nine Months Ended    -----------    -----------   -----------   -----------    -----------
      September 30, 2003
                                                                       
Revenue                     $     2,192    $     3,340   $     3,732   $      --      $     9,264
Inter-segment revenue             4,179             62            11        (4,252)          --
Net Income (loss)                   229          1,272           625        (1,309)           817
Segment Assets                    4,654         13,330         9,157           486         27,627


                                                                       Natural Gas
         (in thousands)       Rotary           NGE       Great Lakes     Services
                                Gas          Leasing     Compression      Group          Total
       Nine Months Ended    -----------    -----------   -----------   -----------    -----------
      September 30, 2002
Revenue                     $     2,856     $    1,684   $     3,661   $      --      $     8,201
Inter-segment revenue             4,064           --            --          (4,064)          --
Net Income  (loss)                  504            850           252          (898)           708
Segment Assets                    4,064          7,360         9,165           882         21,471


5

                                                                       Natural Gas
         (in thousands)       Rotary           NGE       Great Lakes     Services
                                Gas          Leasing     Compression      Group          Total
      Three Months Ended    -----------    -----------   -----------   -----------    -----------
      September 30, 2003
Revenue                     $       992    $     1,270   $     1,437   $      --      $     3,699
Inter-segment revenue             1,435             27             3        (1,465)          --
Net Income  (loss)                  283            398           231          (528)           384

                                                                        Natural Gas
         (in thousands)       Rotary           NGE       Great Lakes     Services
                                Gas          Leasing     Compression      Group          Total
      Three Months Ended    -----------    -----------   -----------   -----------    -----------
      September 30, 2002
Revenue                     $     1,285    $       625   $     1,171   $      --      $     3,081
Inter-segment revenue               980           --            --            (980)          --
Net Income  (loss)                  274            335            97          (338)           368



(6) Earnings per common share

The following table  reconciles the numerators and denominators of the basic and
diluted earnings per share computation.



                                                     Three Months Ended            Nine months Ended
                                                       September 30,                 September 30,
                                                    2003           2002           2003           2002
                                                --------------------------    --------------------------
                                                                                 
Basic earnings per share Numerator:
  Net income                                    $   384,407    $   368,932        817,442        708,041
  Less: dividends on preferred shares               (30,530)       (31,009)       (92,550)      (106,624)
                                                --------------------------    --------------------------
  Net income available to common shareholders   $   353,877    $   337,923    $   724,892    $   601,417
                                                ==========================    ==========================

 Denominator -
  Weighted average common shares outstanding      4,995,713      3,357,632      4,910,062      3,357,632
                                                ==========================    ==========================

  Basic earnings per share                      $      0.07    $      0.10    $      0.15    $      0.18
                                                ==========================    ==========================

Diluted earnings per share Numerator:
  Net income                                    $   384,407    $   368,932        817,442        708,041
  Less: dividends on preferred shares (1)           (30,530)       (31,009)       (92,550)      (106,624)
                                                --------------------------    --------------------------
  Net income available to common shareholders   $   353,877    $   337,923    $   724,892    $   601,417
                                                ==========================    ==========================

 Denominator :
  Weighted average common shares outstanding      4,995,713      3,357,632      4,910,062      3,357,632
  Common stock options and warrants                 393,690        734,230        298,034        779,077
  Conversion of preferred shares (1)                   --             --             --             --
                                                --------------------------    --------------------------
                                                  5,389,673      4,091,862      5,208,096      4,136,709
                                                ==========================    ==========================

  Diluted earnings per share                    $      0.07    $      0.08    $      0.14    $      0.15
                                                ==========================    ==========================


     (1) Preferred shares were anti-dilutive for the nine and three months ended
     September 30, 2003 and 2002.


6



Item 2.  Management's Discussion and Analysis or Plan of Operation

         Overview

         We include the operations of Rotary Gas Systems,  NGE Leasing and Great
Lakes Compression,  which are wholly owned subsidiaries.  These entities provide
products  and  services to the oil and gas  industry  and are engaged in (1) the
manufacture, service, sale, and rental of natural gas compressors to enhance the
productivity of oil and gas wells, and (2) the  manufacture,  sale and rental of
flares and flare ignition  systems for plant and production  facilities.  We are
the parent  company and  provide  administrative  and  management  support  and,
therefore, have expenses associated with that activity.

         Liquidity and Capital Resources

         We have funded our operations  through public and private  offerings of
our common and preferred stock,  subordinated debt and bank debt.  Proceeds were
primarily  used to pay debt  and to fund  the  manufacture  and  fabrication  of
additional units for our rental fleet of gas compressors.

         At September  30, 2003, we had cash and cash  equivalents  of $258,276,
working capital of $274,519 and  non-subordinated  debt of $8,615,251,  of which
$2,342,151  was  classified  as  current.  We had net cash flow  from  operating
activities  of  $1,640,679  during  the  first  nine  months  of 2003.  This was
primarily  from net income of $817,442 plus  depreciation  and  amortization  of
$1,235,120, an increase in accounts payable and accrued liabilities of $708,971,
an increase in deferred taxes of $602,202 and offset by an increase in inventory
of $1,000,735 and accounts receivable of $938,817.

         On October  24,  2002,  we paid off the note of  $6,952,464  payable to
Dominion Michigan, used for the acquisition of the compression related assets of
Great Lakes  Compression.  $3,452,464 of the funds to pay the note came from the
proceeds of our initial public  offering,  and $3,500,000  came from  additional
bank financing to be amortized over 60 months at prime rate plus 1%.

         We entered into a new loan agreement  with our bank,  dated as of March
26, 2003.  This  included new borrowing of $2,150,000 in the form of a term loan
with monthly  principal  payments of $35,833 with interest at 1% over prime rate
but not less than 5.25% for 60 months. The proceeds from this new borrowing were
used to purchase the 28 gas compressors from Hy-Bon. The new loan agreement also
included the renewal of our line of credit for $750,000 with interest at 1% over
prime  rate for one  year.  We have not  drawn  from  the line of  credit  as of
September 30, 2003.

         Funds from the initial  public  offering,  which  closed on October 24,
2002,  have permitted us to actively pursue adding gas compressors to our rental
fleet.  We expect to fund additional  rental units through  additional bank debt
and cash flow from operations.

         A summary of the use of the proceeds from our initial  public  offering
as of September 30, 2003 is as follows:

         o        $3,458,464 to reduce indebtedness; and

         o        $3,070,706 for the  manufacture of gas  compressors  placed in
                  our rental fleet





7





Results of Operations

                                    Nine  Months  Ended   September   30,  2003,
                                    Compared to the Nine months Ended  September
                                    30, 2002.


                                                                           Natural Gas
         (in thousands)           Rotary           NGE       Great Lakes     Services
                                    Gas          Leasing     Compression      Group          Total
       Nine Months Ended        -----------    -----------   -----------   -----------    -----------
      September 30, 2003
                                                                           
Revenue                         $     2,192    $     3,340   $     3,732   $      --      $     9,264
Inter-segment revenue                 4,179             62            11        (4,252)          --
Gross margin                          1,018          2,358         1,458          --            4,834
Selling, general and
administrative expense                  676            128           206           661          1,671
Depreciation and amortization
expense                                 107            620           490            18          1,235
Operating income (loss)                 235          1,610           762          (679)         1,928
Interest expense                          6            348           129            18            501
Other income or (expense)              --               10            (8)         --                2
Provision for income tax               --             --            --             612            612
                                -----------   ------------   -----------   -----------    -----------
Net income                              229          1,272           625        (1,309)           817
                                ===========   ============   ===========   ===========    ===========


        Nine Months Ended
       September 30, 2002
Revenue                         $     2,856    $     1,684   $     3,661   $      --      $     8,201
Inter-segment revenue                 4,064           --            --          (4,064)          --
Gross margin                          1,198          1,209         1,322          --            3,729
Selling, general and
administrative
expense                                 600            120           188           347          1,255
Depreciation and amortization
expense                                  90            303           412            34            839
Operating income  (loss)                508            786           722          (381)         1,635
Interest expense                          6            291           470            30            797
Equity in earnings from joint
venture                                --              340          --            --              340
Other income or (expense)                 2             15          --            --               17
Provision for income tax               --             --            --             487            487
                                -----------   ------------   -----------   -----------    -----------
Net income (loss)               $       504    $       850   $       252   $      (898)   $       708
                                ===========   ============   ===========   ===========    ===========


--------------------------------------------------------------------------------

Rotary Gas Systems Operations

         Revenue from  outside  sources  decreased  23% or $664,000 for the nine
months ended  September 30, 2003, as compared to the same period ended September
30, 2002.  Because our products are  custom-built,  fluctuations in revenue from
outside sources are expected. This decrease was mainly the result of a reduction
in the sale of compressor units to third parties.

         The gross  margin  percentage  increased  from 42% for the nine  months
ended  September 30, 2002, to 46% for the same period ended  September 30, 2003.
The cost of revenue is comprised of expenses associated with service,  parts and
manufacturing  expenses.  This  increase  resulted  mainly  from a change in the
product mix.

         Selling,  general and  administrative  expense increased $76,000 or 13%
for the nine months ended  September  30,  2003,  as compared to the same period
ended  September  30,  2002.  This was mainly the result of the  addition of new
salesmen in the Farmington, New Mexico and West Texas areas.



8



         Depreciation expense increased 19% or $17,000 for the nine months ended
September  30, 2003,  as compared to the same period ended  September  30, 2002.
This increase was mainly due to the purchase of additional sales vehicles,  shop
and office equipment.

NGE Leasing Operations

         Revenue from our rental of natural gas compressors increased $1,656,000
or 98% for the nine months ended  September  30,  2003,  as compared to the same
period in 2002.  This increase is the result of units added to our rental fleet.
From September 30, 2002, to September 30, 2003, we added 83 gas compressor units
to our rental  fleet,  which  included the 28 units we purchased  from Hy-Bon on
March 31,  2003.  The  revenue  from the  Joint  Venture,  which was  previously
accounted for using the equity method,  has been consolidated  beginning January
1, 2003. The profit earned on the units purchased from Hy-Bon is included in our
consolidated earnings beginning April 1, 2003.

         The gross  margin  percentage  decreased  from 72% for the nine  months
ended  September 30, 2002 to 71% for the same period ending 2003.  This decrease
mainly resulted from a slight increase in maintenance  expenses  associated with
rental compressor units.

         Selling,  general and administrative expense increased $8,000 or 7% for
the nine months  ended  September  30,  2003,  as compared to the same period in
2002.  This was mainly  the  result of an  increase  in sales  commissions  from
increased rental revenue.

         Depreciation  expense  increased  105% or $317,000  for the nine months
ended  September  30, 2003,  as compared to the same period ended  September 30,
2002.  This  increase  was the result of new gas  compressor  rental units being
added to the rental fleet during the period.

         There was an increase in interest  expense of 20% from $291,000 for the
nine months  ended  September  30,  2002,  to $348,000 for the same period ended
September 30, 2003.  This is mainly as a result of an increase in bank debt used
to purchase equipment for the rental fleet.

Great Lakes Compression

         Revenue  increased  2% for the nine months  ended  September  30, 2003,
compared to the same period in 2002.  This increase  resulted from a decrease in
the sales of compressor  units to third parties offset by increases in parts and
labor sales.  Because our compressor  units are  custom-built,  fluctuations  in
revenue from outside sources are expected.

         The gross  margin  percentage  increased  from 36% for the nine  months
ended September 30, 2002 to 39% for the same period in 2003. The cost of revenue
is comprised of expenses  associated  with the maintenance of the gas compressor
rental  activity,  service,  parts and  manufacturing  expenses.  This  increase
resulted mainly from a change in the sales product mix.

         Selling, general and administrative expense increased by 10% or $18,000
for the nine months ended  September 30, 2003, as compared to the same period in
2002.  This is mainly the result of an increase in advertising  and  promotional
expenses.

         Depreciation  expense increased from $412,000 for the nine months ended
September  30, 2002,  to $490,000 for the same period ended  September 30, 2003.
The increase is the result of  equipment  that was added to the rental fleet and
the replacement of several service vehicles.

         There was a decrease in interest  expense of 73% from  $470,000 for the
nine months  ended  September  30, 2002 to  $129,000  for the nine months  ended


9



September 30, 2003. This decrease  resulted from a reduction of the debt owed to
Dominion  Michigan.  Part of the proceeds from our initial  public  offering was
used to  reduce  debt in the  amount of  $3,452,464  and our bank  financed  the
remaining balance of $3,500,000 at a more favorable interest rate.

         Natural Gas Services Group

         Selling, general and administrative expense increased 90% from $347,000
for the nine months ended  September  30, 2002,  as compared to $661,000 for the
same period ended  September  30, 2003.  This was mainly the result of the added
expense  associated  with  being a publicly  held  company  such as legal  fees,
auditor fees, underwriters and public relations fees.

         Amortization  and depreciation  expense  decreased 47% from $34,000 for
the nine months ended  September  30, 2002, to $18,000 for the same period ended
September  30, 2003.  This mainly  resulted from vehicles that were moved to our
subsidiary, Great Lakes Compression.

         Interest  expense  decreased 40% from $30,000 for the nine months ended
September  30, 2002,  to $18,000 for the same period ended  September  30, 2003.
This decrease resulted from a reduction in the interest rate and from bank notes
for vehicles moved to our subsidiary.

         Provision  for income tax is  accounted  for on a  consolidated  basis.
Therefore, the tax for all companies is included in the provision for income tax
for Natural Gas Services Group.  Income tax expense  increased  $125,000 or 26%,
which is  consistent  with and  pursuant  to  changes in state and  federal  tax
statutes and the increase in net taxable income.

Three  months  Ended  September  30,  2003.  Compared to the Three  Months Ended
September 30, 2002



         (in thousands)                                                          Natural Gas
                                        Rotary          NGE        Great Lakes     Services
                                          Gas         Leasing      Compression      Group          Total
       Three months Ended             -----------   ------------   -----------   -----------    -----------
       September 30, 2003
                                                                                 
Revenue                               $       992   $      1,270   $     1,437   $      --      $     3,699
Inter-segment revenue                       1,435             27             3        (1,465)          --
Gross margin                                  539            804           512          --            1,855
Selling, general and administrative
expense                                       216             42            71           227            556
Depreciation and amortization
Expense                                        37            241           171             6            455
Operating income  (loss)                      286            521           270          (233)           844
Interest expense                                3            124            40             5            172
Other income or (expense)                    --                1             1          --                2
Provision for income tax                     --             --            --             290            290
                                      -----------   ------------   -----------   -----------    -----------
Net income (loss)                     $       283   $        398   $       231   $      (528)   $       384
                                      ===========   ============   ===========   ===========    ===========

       Three months Ended
       September 30, 2002
Revenue                               $     1,285   $        625   $     1,171   $      --      $     3,081
Inter-segment revenue                         980           --            --            (980)          --
Gross margin                                  509            448           458          --            1,415
Selling, general and administrative
expense                                       203             40            62           107            412
Depreciation and amortization
Expense                                        31            114           143            13            301
Operating income (loss)                       275            294           253          (120)           702
Equity in earning of joint venture            132            132
Interest expense                                2            105           156            11            274
Other income or (expense)                       1             14          --            --               15
Provision for income tax                     --             --            --             207            207
                                      -----------   ------------   -----------   -----------    -----------
Net Income (loss)                     $       274   $        335   $        97   $      (338)   $       368
                                      ===========   ============   ===========   ===========    ===========



10



 Rotary Gas Systems Operations

         Revenue from outside  sources  decreased  $293,000 or 23% for the three
months ended  September 30, 2003, as compared to the same period ended September
30, 2002.  Because our products are  custom-built,  fluctuations in revenue from
outside sources are expected. This decrease was mainly the result of a reduction
in the sale of compressor  units to third parties.  The quarter ending September
30, 2002 included 10 compressor  units sold to a major  customer  while the same
period for 2003 had no  compressor  sales but this was offset by an  increase in
flare unit sales, rebuild service and parts.

         The gross margin percentage increased to 54% for the three months ended
September 30, 2003,  as compared to 40% for the same period ended  September 30,
2002.  The cost of revenue is comprised  of expenses  associated  with  service,
parts and manufacturing expenses. This increase resulted mainly from a change in
the product-mix.

         Selling, general and administrative expense increased 6% or $13,000 for
the three months ended  September 30, 2003, as compared to the same period ended
September  30, 2002.  This was mainly the result of the addition of new salesmen
in the  Farmington,  New  Mexico  and West  Texas  areas.  Depreciation  expense
increased  19% from $31,000 for the three months ended  September  30, 2002,  to
$37,000 for the same period ended  September 30, 2003.  This increase was mainly
due to the purchase of additional service vehicles, shop and office equipment.

         There was a slight  decrease in interest  expense for the three  months
ended  September  30, 2003,  as compared to the same period ended  September 30,
2002, mainly due to the reduction in loan balances on vehicles.

NGE Leasing Operations

         Revenue from the rental of natural gas  compressors  increased 103% for
the three months  ended  September  30, 2003,  as compared to the same period in
2002.  This increase is the result of the revenue from units added to our rental
fleet,  both from the units we  manufactured  and the units we acquired from the
Hy-Bon transaction.

         The gross  margin  percentage  decreased  from 72% for the three months
ended  September 30, 2002, to 63% the same period in 2003.  This decrease mainly
resulted  from an  increase  in the  maintenance  expenses  associated  with the
compressor  units.  This does not  represent  a trend since  repairs  cost often
fluctuate from period to period on our rental equipment.

         Selling,  general and administrative expense increased from $40,000 for
the three months  ended  September  30, 2002,  to $42,000 for the same period in
2003.  This was mainly the result of an  increase  in sales  commissions  due to
increased rental revenue.

         Depreciation expense increased 111% from $143,000, for the three months
ended  September  30, 2002 to $241,000 for the three months ended  September 30,
2003.  This  increase  was the result of new gas  compressor  rental units being
added to the rental fleet during the period.

         There was an increase in interest  expense from  $105,000 for the three
months ended September 30, 2002, to $124,000 for the same period ended September
30,  2003.  This is mainly a result of an increase in bank debt used to purchase
equipment for the rental fleet.



11



Great Lakes Compression

         Revenue increased 23% for the three months ended September 30, 2003, as
compared  to the  same  period  in  2002.  This  increase  was the  result  of a
significant increase in maintenance and labor sales to third parties.

         The gross  margin  percentage  decreased  from 39% for the three months
ended  September  30,  2002,  to 36% for the same  period  in 2003.  The cost of
revenue is  comprised of expenses  associated  with the  maintenance  of the gas
compressor  rental activity,  service,  parts and manufacturing  expenses.  This
decrease resulted mainly from a change in the sales product mix.

         Selling,  general and administrative expense increased from $62,000 for
the three months  ended  September  30, 2002,  to $71,000 for the same period in
2003.  This is mainly the result of an increase in advertising  and  promotional
expenses.

         Depreciation expense increased from $143,000 for the three months ended
September  30, 2002,  to $171,000 for the same period ended  September 30, 2003.
The increase is the result of  equipment  that was added to the rental fleet and
the replacement of service vehicles.

         There was a decrease in interest  expense  from  $156,000 for the three
months ended  September 30, 2002, to $40,000 for the same period ended September
30, 2003.  This decrease  resulted from a reduction of the debt owed to Dominion
Michigan.  Part of the  proceeds  from our initial  public  offering was used to
reduce debt in the amount of  $3,452,464  and our bank  financed  the  remaining
balance of $3,500,000 at a more favorable interest rate.

         Natural Gas Services Group

         Selling,   general  and  administrative  expense  increased  112%  from
$107,000 for the three months ended September 30, 2002, to $227,000 for the same
period ended  September 30, 2003. This was mainly the result of an added expense
associated with being a publicly held company such as legal fees,  auditor fees,
underwriters and public relations fees.

         Amortization  and depreciation  expense  decreased 54% from $13,000 for
the three months ended  September  30, 2002, to $6,000 for the same period ended
September  30, 2003.  This mainly  resulted from vehicles that were moved to our
subsidiary, Great Lakes Compression.

         Interest expense  decreased 55% from $11,000 for the three months ended
September 30, 2002, to $5,000 for the same period ended September 30, 2003. This
decrease  resulted  from a reduction in the interest rate and for bank notes for
vehicles moved to our subsidiary.

         Provision  for income tax is  accounted  for on a  consolidated  basis.
Therefore, the tax for all companies is included in the provision for income tax
for Natural Gas Services  Group.  Income tax expense  increased  $83,000 or 40%,
which is  consistent  with and  pursuant  to  changes in state and  federal  tax
statutes. This increase is mainly due to an increase in income before taxes.


Item 3.  Controls and Procedures

(a) Evaluation of disclosure controls and procedures.

         Under the  supervision  and with the  participation  of our management,
including our chief executive officer and chief financial officer,  we evaluated


12


the  effectiveness  of the design and operation of our  disclosure  controls and
procedures  (as defined in Rule 13a-14(c)  under the Securities  Exchange Act of
1934) as of a  September  30,  2003.  Based  upon  that  evaluation,  our  chief
executive  officer  and  chief  financial  officer  concluded  that,  as of  the
Evaluation Date, our disclosure  controls and procedures are effective in timely
alerting them to the material  information  relating to us and our  consolidated
subsidiaries required to be included in our periodic filings with the SEC.

(b) Changes in internal controls.

         There were no significant  changes made in our internal controls during
the period  covered by this report or, to our  knowledge,  in other factors that
could  significantly  affect  these  controls  subsequent  to the  date of their
evaluation.



PART II - OTHER INFORMATION

Item 2.     Changes in Securities and Use of Proceeds

         (c) During the three months ended September 30, 2003, holders of 14,000
shares of our outstanding 10% Convertible Series A Preferred Stock converted the
shares into 14,000 shares of our common stock. There was no underwriter involved
in the transactions.  The shares of our common stock were all issued in reliance
upon the exemption  contained in Section 4(2) of the  Securities Act of 1933, as
amended,  because all of the persons were  accredited  investors and appropriate
restrictive  legends were placed on the certificates unless the shares were sold
pursuant to the provisions of Rule 144.

         (d)  On  October  21,  2002,  our  Registration   Statement  (File  No.
333-88314) was declared effective.

         Since October 21, 2002, we have incurred an aggregate of  approximately
$1,345,830 of expenses in connection with the offering,  including  underwriting
discounts ($708,750),  expenses paid to or for the underwriter  ($157,500),  and
other expenses of the offering  ($479,680).  Such amounts were not paid directly
or indirectly to the directors, the officers or to persons owning 10% or more of
any class of our equity securities or to our affiliates.  Rather,  such payments
were to  non-associated  third parties.  After deducting the total expenses,  we
received net offering  proceeds of approximately  $6,529,170.  Through September
30, 2003, the net offering proceeds have been used for:

         o        $3,458,464 to reduce indebtedness; and

         o        $3,070,706 for the  manufacture of gas  compressors  placed in
                  our rental fleet.

The above  reflects  that we have used all of the net proceeds  that we received
from our offering of common stock and  warrants.  None of the warrants have been
exercised so we have realized no proceeds from the exercise thereof.


Item 5.  Other Information

 Changes in Board of Directors:

         Effective  September 10, 2003 Scott W. Sparkman resigned as a member of
the Board of Directors and was replaced by Wallace C. Sparkman.

         Effective October 23, 2003 James T. Grigsby resigned as a member of the
Board of Directors to pursue his personal interests.




13



                        NATURAL GAS SERVICES GROUP, INC.

Commission File Number:  1-31398
Quarter Ended September 30, 2003
Form 10-QSB

Item 6.  Exhibits and Reports on Form 8-K
(a)      Exhibits

         31.1     Certification  of Chief  Executive  Officer  Pursuant  to Rule
                  13a-14(a)

         31.2     Certification  of Chief  Financial  Officer  Pursuant  to Rule
                  13a-14(a)

         32.1     Certification of Chief Executive Officer Pursuant to 18 U.S.C.
                  Section 1350

         32.2     Certification of Chief Financial Officer Pursuant to 18 U.S.C.
                  Section 1350

(b)      On August 6, 2003,  we filed a Current  Report on Form 8-K dated August
6, 2003,  filing a news release as an Exhibit  under Item 7 and  describing  the
news release under Items 9 and 12.






























14



SIGNATURES

In accordance with the  requirements of the Exchange Act, the registrant  caused
this  report to be  signed on its  behalf  by the  undersigned,  thereunto  duly
authorized.


NATURAL GAS SERVICES GROUP, INC.


By: /s/ Wayne L. Vinson
   -----------------------------
   Wayne L. Vinson
   President and Chief Executive
   Officer

By: /s/ Earl R. Wait
   -----------------------------
   Earl R. Wait
   Chief Financial Officer
   And Treasurer

November 12, 2003
                                  EXHIBIT INDEX


31.1     Certification of Chief Executive Officer Pursuant to Rule 13a-14(a)

31.2     Certification of Chief Financial Officer Pursuant to Rule 13a-14(a)

32.1     Certification of Chief Executive Officer Pursuant to 18 U.S.C.  Section
         1350

32.2     Certification of Chief Financial Officer Pursuant to 18 U.S.C.  Section
         1350



















15