Exhibit 3.345

PAGE 1

     I, JEFFREY W. BULLOCK, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED ARE TRUE AND CORRECT COPIES OF ALL DOCUMENTS ON FILE OF “ROCKDALE PHYSICIAN PRACTICES, LLC” AS RECEIVED AND FILED IN THIS OFFICE.

     THE FOLLOWING DOCUMENTS HAVE BEEN CERTIFIED:

     CERTIFICATE OF FORMATION, FILED THE TWENTY-THIRD DAY OF NOVEMBER, A.D. 2009, AT 7:16 O’CLOCK P.M.

     AND I DO HEREBY FURTHER CERTIFY THAT THE AFORESAID CERTIFICATES ARE THE ONLY CERTIFICATES ON RECORD OF THE AFORESAID LIMITED LIABILITY COMPANY, “ROCKDALE PHYSICIAN PRACTICES, LLC”.

/s/ Jeffrey W. Bullock

Jeffrey W. Bullock, Secretary of State

4756887       8100H

110292416 AUTHENTICATION: 8619929

DATE: 03-14-11

You may verify this certificate online
at corp.delaware.gov/authver.shtml

State of Delaware
Secretary of State
Division of Corporations
Delivered 07:24 PM 11/23/2009
FILED 07:16 PM 11/23/2009
SRV 091042569 - 4756887 FILE

Certificate of Formation
of
Rockdale Physician Practices, LLC

     The undersigned, an authorized natural person, for the purpose of forming a limited liability company, under the provisions and subject to the requirements of the State of Delaware, particularly Chapter 18, Title 6 of the Delaware Code and the acts amendatory thereof and supplemental thereto, and known, identified, and referred to as the Delaware Limited Liability Company Act (the “Act”), hereby certifies that:

     FIRST: The name of the limited liability company is Rockdale Physician Practices, LLC (the “Company”).

     SECOND: The address of the registered office and the name and address of the registered agent of the Company required to be maintained by Section 18-104 of the Act is The Corporation Trust Company, Corporation Trust Center, 1209 Orange Street, Wilmington, Delaware 19801.

     IN WITNESS WHEREOF, the undersigned has executed this Certificate of Formation as of November 23, 2009.

By:	/s/ Mary Kim E. Shipp
	Mary Kim E. Shipp
	Authorized Person