FORM 4
[ X ] 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
                                                                                  
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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(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

BENSON KEVIN E 		2. Issuer Name and Ticker or Trading Symbol

Emergency Medical Services CORP [ EMS ] 		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)

C/O EMERGENCY MEDICAL SERVICES CORP., 6200 S. SYRACUSE WAY, SUITE 200 		3. Date of Earliest Transaction (MM/DD/YYYY)

5/25/2011
(Street)

GREENWOOD VILLAGE, CO 80111-4737
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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
Restricted Stock Units     (1) 5/25/2011     D         2374      (2)   (2) Class A Common Stock   2374     (2) 0   D  
 
Restricted Stock Units     (1) 5/25/2011     D         3018      (2)   (2) Class A Common Stock   3018     (2) 0   D  
 
Restricted Stock Units     (1) 5/25/2011     D         2325      (2)   (2) Class A Common Stock   2325     (2) 0   D  
 

Explanation of Responses:
( 1)  Each Restricted Stock Unit represents the right to receive one share of the issuer's Class A Common Stock.
( 2)  Pursuant to the merger agreement dated as of February 13, 2011, by and among the issuer, CDRT Acquisition Corporation and CDRT Merger Sub, Inc., the Restricted Stock Units became vested in full at the effective time of the merger (to the extent not previously vested) and were cancelled in exchange for a cash payment equal to $64.00 times the number of shares of Class A Common Stock subject to such Restricted Stock Units.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
BENSON KEVIN E
C/O EMERGENCY MEDICAL SERVICES CORP.
6200 S. SYRACUSE WAY, SUITE 200
GREENWOOD VILLAGE, CO 80111-4737 		X



Signatures
/s/ Carl F. Berglind, as attorney-in-fact 5/26/2011
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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