CUSIP No. 89579K 10 9                                          Page 1 of 7 Pages

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                                 (Rule 13d-101)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
            TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                  RULE 13d-2(a)

                                (Amendment No. )1

                          Triad Hospitals, Inc.
-----------------------------------------------------------------
                                (Name of Issuer)

                          Common Stock, $.01 par value
-----------------------------------------------------------------
                         (Title of Class of Securities)

                                   89579K 10 9
-----------------------------------------------------------------
                                 (CUSIP Number)

Welsh, Carson, Anderson                  William J. Hewitt, Esq.
  & Stowe                                 Reboul, MacMurray, Hewitt,
320 Park Avenue, Suite 2500              Maynard & Kristol
New York, New York  10022                45 Rockefeller Plaza
Attention: Jonathan Rather               New York, New York  10111
Tel. (212) 893-9500                      Tel. (212) 841-5700

-----------------------------------------------------------------
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                  April 27,2001
-----------------------------------------------------------------
             (Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is
filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the
following box [ ].
--------
         1The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page. The information required on
the remainder of this cover page shall not be deemed to be "filed" for the
purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise
subject to the liabilities of that section of the Act but shall be subject to
all other provisions of the Act.






CUSIP No. 89579K 10 9                                          Page 2 of 7 Pages


1)   Name of Reporting Person            Welsh, Carson, Anderson
     and I.R.S. Identification            & Stowe VIII, L.P.
     No. of Above Person, if
     an Entity (Voluntary)
-----------------------------------------------------------------
2)   Check the Appropriate Box                  (a) [ ]
     if a Member of a Group                     (b) [ ]
-----------------------------------------------------------------
3)   SEC Use Only

-----------------------------------------------------------------
4)   Source of Funds                             OO

-----------------------------------------------------------------
5)   Check if Disclosure of
     Legal Proceedings Is                   Not Applicable
     Required Pursuant to
     Items 2(d) or 2(e)
-----------------------------------------------------------------
6)   Citizenship or Place
     of Organization                        Delaware

Number of                           7)   Sole Voting   8,024,426 shares of
Shares Beneficially                                    Power Common Stock
Owned by Each
Reporting Person                    --------------------------------------
                                    8)   Shared Voting
                                             Power            -0-
                                    --------------------------------------
                                    9)   Sole Disposi- 8,024,426 shares of
                                         tive Power    Common Stock
                                    --------------------------------------
                                    10)  Shared Dis-
                                         positive Power       -0-
                                    --------------------------------------
11)  Aggregate Amount Beneficially                     8,024,426 shares of
         Owned by Each Reporting Person                Common Stock
--------------------------------------------------------------------------
12)  Check if the Aggregate
         Amount in Row (11)
         Excludes Certain Shares
--------------------------------------------------------------------------
13)      Percent of Class
         Represented by                                12.5%
         Amount in Row (11)
--------------------------------------------------------------------------
14)      Type of Reporting
         Person                                                  PN






CUSIP No. 89579K 10 9                                          Page 3 of 7 Pages

                                  Schedule 13D

Item 1.   Security and Issuer.
          -------------------

          This  statement  relates  to the  Common  Stock,  $.01 par value  (the
"Common Stock"), of Triad Hospitals,  Inc., a Delaware  corporation  ("Triad" or
the  "Issuer").  The  principal  executive  offices of the Issuer are located at
13455 Noel Road, Suite 2000, Dallas, Texas 75240.

Item 2.  Identity and Background.
         -----------------------

          (a) The  undersigned  hereby  files this  statement on Schedule 13D on
behalf of Welsh,  Carson,  Anderson  & Stowe  VIII,  L.P.,  a  Delaware  limited
partnership ("WCAS VIII" or the "Reporting Person").

          (b)-(c) WCAS VIII is a Delaware  limited  partnership.  The  principal
business  of WCAS VIII is that of a  private  investment  partnership.  The sole
general partner of WCAS VIII is WCAS VIII Associates, L.L.C., a Delaware limited
liability company ("VIII Associates"). The principal business of VIII Associates
is that of acting as the general  partner of WCAS VIII.  The principal  business
and principal  office  address of WCAS VIII,  VIII  Associates  and the managing
members of VIII  Associates is 320 Park Avenue,  Suite 2500,  New York, New York
10022. The following individuals, who are citizens of the United States, are the
managing members of VIII Associates:

                  (i) Patrick J. Welsh
                  (ii) Russell L. Carson
                  (iii) Bruce K. Anderson
                  (iv)Thomas E. McInerney
                  (v) Robert A. Minicucci
                  (vi)Anthony J. deNicola
                  (vii)Paul B. Queally
                  (viii)Lawrence B. Sorrel
                  (ix) Jonathan Rather

          (d) None of the  entities  or persons  identified  in this Item 2 has,
during the last five years, been convicted in a criminal  proceeding  (excluding
traffic violations or similar misdemeanors).

          (e) None of the  entities  or persons  identified  in this Item 2 has,
during the last five years,  been a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction and as a result of such proceeding
was or is  subject  to a  judgment,  decree  or  final  order  enjoining  future
violations  of, or prohibiting  or mandating  activities  subject to, federal or
state securities laws or finding any violation with respect to such laws.

Item 3.  Source and Amount of Funds and Other Consideration.
         --------------------------------------------------

          This statement  relates to the acquisition by the Reporting  Person of
8,024,426  shares of Common Stock pursuant to the terms of an Agreement and Plan
of Merger  entered into on October 18, 2000 by and between the Issuer and Quorum
Health Group, Inc., a Delaware corporation ("Quorum")(as amended by the






CUSIP No. 89579K 10 9                                          Page 4 of 7 Pages

First  Amendment to Agreement and Plan of Merger  entered into on April 13, 2001
by and between the Issuer and Quorum (the "Amendment"), the "Merger Agreement").
The Merger Agreement is incorporated  herein as Exhibit A hereto by reference to
Exhibit 2.1 to the Issuer's  Report on Form 8-K dated October 18, 2000, as filed
with the Securities and Exchange  Commission (the  "Commission")  on October 20,
2000, and the Amendment is incorporated  herein as Exhibit B hereto by reference
to Exhibit  99.2 to the  Issuer's  Report on Form 8-K dated April 14,  2001,  as
filed with the  Commission on April 16, 2001, and any  descriptions  thereof are
qualified in their entirety by reference thereto.

          As provided in the Merger  Agreement,  effective  April 27,2001 Quorum
merged with and into the Issuer,  upon which the  separate  existence  of Quorum
ceased,  leaving  the  Issuer to  continue  as the  surviving  corporation  (the
"Merger").  As a result of the Merger, each outstanding share of Quorum's common
stock was converted  into the right to receive (i) 0.4107 shares of the Issuer's
Common Stock and (ii) $3.50 in cash. WCAS VIII and the managing  members of VIII
Associates were shareholders of Quorum,  and acquired Common Stock in accordance
with the  terms of the  Merger.  The  Common  Stock  issued  in the  Merger  was
registered  under  the  Securities  Act  of  1933,  as  amended,  pursuant  to a
Registration  Statement on Form S-4 filed with the  Commission  by the Issuer on
January  24,  2001 and  amended  by  Amendment  No.  1  thereto  filed  with the
Commission by the Issuer on March 15, 2001.

Item 4.  Purpose of Transaction.
         ----------------------

          The purpose of the transaction described in Item 3 above was to effect
the acquisition of Quorum by the Issuer.  Upon the  effectiveness of the Merger,
Russell L. Carson,  a managing  member of VIII  Associates,  joined the Issuer's
Board of Directors.

Item 5.  Interest in Securities of the Issuer.
         ------------------------------------

          The  following  information  is  based  on a  total  of  approximately
64,236,000  shares of Common  Stock  outstanding  after  the  completion  of the
Merger:

          (a)

          WCAS VIII and VIII Associates

          WCAS VIII owns  8,024,426  shares of Common  Stock,  or  approximately
12.5% of the Common Stock outstanding.  VIII Associates,  as the general partner
of WCAS VIII, may be deemed to  beneficially  own the  securities  owned by WCAS
VIII.

          Managing Members of VIII Associates
          ------------------------------------

          (i) Patrick J. Welsh  directly  beneficially  owns  187,784  shares of
Common Stock and  indirectly  beneficially  owns  (through a family  foundation)
30,803 shares of Common Stock,  or in the  aggregate  approximately  0.3% of the
Common Stock outstanding.

          (ii)Russell  L. Carson  directly  beneficially  owns 782,966 shares





CUSIP No. 89579K 10 9                                          Page 5 of 7 Pages

of Common  Stock  (including  13,475  shares  issuable  upon  exercise  of stock
options) and  indirectly  beneficially  owns (through a trust for the benefit of
his children)  1,232 shares of Common Stock,  or in the aggregate  approximately
1.2% of the Common Stock outstanding.

          (iii)  Bruce K.  Anderson  owns  678,715  shares of Common  Stock,  or
approximately 1.1% of the Common Stock outstanding.

          (iv) Thomas E. McInerney owns 117,868 shares of Common Stock,  or less
than 0.1% of the Common Stock outstanding.

          (v) Robert A.  Minicucci  owns 33,727 shares of Common Stock,  or less
than 0.1% of the Common Stock outstanding.

          (vi) Anthony J. deNicola  owns 3,493 shares of Common  Stock,  or less
than 0.1% of the Common Stock outstanding.

          (vii) Paul B. Queally owns 3,493 shares of Common Stock,  or less than
0.1% of the Common Stock outstanding.

          (viii)  Lawrence B. Sorrel owns 4,657 shares of Common Stock,  or less
than 0.1% of the Common Stock outstanding.

          (ix) Jonathan M. Rather owns 932 shares of Common Stock,  or less than
0.1% of the Common Stock outstanding.

          (b) The managing members of VIII Associates may be deemed to share the
power to vote or direct the  voting of and to dispose or direct the  disposition
of the Common  Stock owned by WCAS VIII.  Each of the  managing  members of VIII
Associates disclaims beneficial ownership of all Common Stock other than that he
owns  directly or by virtue of his  indirect  pro rata  interest,  as a managing
member of VIII Associates, in the Common Stock owned by WCAS VIII.

          (c) Except as  described  in this  statement,  none of the entities or
persons named in Item 2 has effected any  transaction in the Common Stock in the
past 60 days.

          (d) Except as described in this statement,  no person has the power to
direct the receipt of  dividends on or the proceeds of sales of the Common Stock
owned by WCAS VIII.

          (e) Not Applicable.

Item 6.   Contracts, Arrangements, Understandings or
          Relationships with Respect to Securities
          of the Issuer.
          ------------------------------------------

          Not Applicable

Item 7.  Material to Be Filed as Exhibits.
         --------------------------------

          Exhibit A - Merger Agreement (incorporated by reference to Exhibit





CUSIP No. 89579K 10 9                                          Page 6 of 7 Pages

2.1 to the Issuer's Report on Form 8-K dated October 18, 2000, as filed with the
Commission on October 20, 2000)

          Exhibit B - Amendment to Merger  Agreement  (incorporated by reference
to Exhibit  99.2 to the  Issuer's  Report on Form 8-K dated April 14,  2001,  as
filed with the Commission on April 16, 2001)






CUSIP No. 89579K 10 9                                          Page 7 of 7 Pages



                                    Signature

          After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.


                                    WELSH, CARSON, ANDERSON & STOWE VIII, L.P.
                                    By:  WCAS VIII Associates, LLC,
                                            General Partner


                                    By: /s/ Jonathan Rather
                                       --------------------------
                                            Managing Member



Dated: May 2, 2001