FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * GARRISON KAREN M   2. Issuer Name and Ticker or Trading Symbol TENET HEALTHCARE CORP [THC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 1445 ROSS AVENUE, SUITE 1400 3. Date of Earliest Transaction (Month/Day/Year) 05/06/2013 (Street) DALLAS, TX 75202 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock (1) 05/06/2013   M(2)   5,825 A $ 0 31,198 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

2010 May Director Stock Units (1) (3)

(4)

05/06/2013

M

5,825

(5)

(5)

Common Stock

5,825

$ 0

0

D

2013 May Director Stock Units (3)

(4)

05/06/2013

A

3,618

(6)

(6)

Common Stock

3,618

$ 0

3,618

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
GARRISON KAREN M 1445 ROSS AVENUE SUITE 1400 DALLAS, TX 75202	X

Signatures

/s/ Jeffrey S. McFall, Attorney-in-Fact for Karen M. Garrison		05/08/2013
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	All historical share data in this Form 4 have been restated to reflect a one-for-four reverse stock split effective as of October 11, 2012.
(2)	Scheduled conversion of previously reported 2010 May Director Stock Units on the third anniversary of the date of grant in accordance with the terms of the Company's 2008 Stock Incentive Plan. The reporting person settled the Stock Units for shares of the Company's common stock.
(3)	These Stock Units were awarded under the Company's Stock Incentive Plan.
(4)	Each Stock Unit is the economic equivalent of one share of the Company's common stock.
(5)	The 2010 May Director Stock Units vested on the date of grant and were settled on the third anniversary of the date of grant in accordance with the terms of the Company's 2008 Stock Incentive Plan. The reporting person settled the Stock Units for shares of the Company's common stock.
(6)	These Stock Units vested immediately on the grant date. The Stock Units will be settled on the third anniversary of the date of grant or upon termination of service (unless settlement has been deferred). The Stock Units may be settled in cash, stock or a combination of cash and stock.

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