EXHIBIT 3.75

Delaware

The First State

     I, HARRIET SMITH WINDSOR, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED IS A TRUE AND CORRECT COPY OF THE CERTIFICATE OF FORMATION OF “RIVER PARK PHYSICIAN GROUP, LLC”, FILED IN THIS OFFICE ON THE TWENTY—FIRST DAY OF APRIL, A.D. 2008, AT 6:19 O’CLOCK P.M.

/s/ Harriett Smith Windsor  

Harriet Smith Windsor, Secretary of State 

4536868   8100	AUTHENTICATION: 6539356
080455035	Date: 04-22-08

CERTIFICATE OF FORMATION
OF
RIVER PARK PHYSICIAN GROUP, LLC

     Pursuant to Section 18-201 of the Delaware Limited Liability Company Act (the “Act”), the undersigned, desiring to form a limited liability company, does hereby certify as follows:

     1. The name of the limited liability company is RIVER PARK PHYSICIAN GROUP, LLC (the “LLC”).

     2. The address of its registered office in the State of Delaware is: Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, Delaware 19801. The name of its registered agent at such address is The Corporation Trust Company.

     3. The LLC shall have the power and authority to carry on any business permitted by, and to have and exercise all of the powers and rights conferred by, the Act as amended from time to time or any successor provisions thereto.

     4. This Certificate of Formation shall be effective upon filing with the Delaware Secretary of State.

     IN WITNESS WHEREOF, the undersigned has executed this Certificate of Formation on this 21st day of April, 2008.

/s/ Howard T. Wall III  

Howard T. Wall III, Authorized Person 

STATE OF DELAWARE

SECRETARY OF STATE

DIVISION OF CORPORATIONS

DELIVERED 06:37 PM 04/21/2008

FILED 06:19 PM 04/21/2008

SRV 080455035 — 0536868 FILE