25 East Same Day Surgery, L.L.C.

Advanced Ambulatory Surgical Care, L.P. (d/b/a Advanced Surgical Care)

Adventist Midwest Health/USP Surgery Centers, L.L.C.

AIG Holdings, LLC

AIGB Austin, LP

AIGB Global, LLC

AIGB Group, Inc.

AIGB Holdings, Inc.

AIGB Management Services, LLC

Alamo Heights Surgicare, L.P. (d/b/a Alamo Heights Surgery Center)

Alliance Greenville Texas General Partner, LLC

Alliance Sterling Ridge, L.P.

Alliance Surgery Birmingham, LLC

Alliance Surgery, Inc. (d/b/a Texas ASI, Inc.)

Ambulatory Surgical Associates, LLC (d/b/a Tullahoma Surgery Center)

Ambulatory Surgical Center of Somerville, LLC (d/b/a Somerset Ambulatory Surgical Center)

American Institute of Gastric Banding Phoenix, Limited Partnership

American Institute of Gastric Banding, Ltd. (d/b/a 1)AIGB Diagnostics 2) Turning Point Specialty Surgery Center)

APN (d/b/a Arlington Physicians Network)

Arlington Orthopedic and Spine Hospital, LLC (d/b/a Baylor Orthopedic and Spine Hospital at Arlington)

Arlington Surgicare Partners, Ltd. (d/b/a Baylor Surgicare at Arlington)

ASC Coalition, Inc.

Bagley Holdings, LLC

Baptist Plaza Surgicare, L.P.

Baptist Surgery Center, L.P.

Baptist Women’s Health Center, LLC (d/b/a Saint Thomas Hospital for Specialty Surgery (f/k/a Saint Thomas Hospital for Spinal Surgery))

Baptist/USP Surgery Centers, L.L.C.

Baylor Surgicare at Ennis, LLC

Baylor Surgicare at Granbury, LLC

Baylor Surgicare at Mansfield, LLC

Baylor Surgicare at Plano Parkway, LLC

Baylor Surgicare at Plano, LLC (d/b/a Baylor Surgicare at Plano)

Beaumont Surgical Affiliates, Ltd. (d/b/a Baptist Beaumont Surgical Affiliates)

Bellaire Outpatient Surgery Center, L.L.P. (d/b/a Baylor Surgicare at Oakmont)

Bloomington ASC, LLC (d/b/a Indiana Specialty Surgery Center)

Bon Secours Surgery Center at Harbour View, LLC

Bon Secours Surgery Center at Virginia Beach, LLC

BremnerDuke Mary Shiels Development, L.P.

Briarcliff Ambulatory Surgery Center, L.P. (d/b/a Briarcliff Surgery Center)

Cascade Spine Center, LLC

Castle Rock Surgery Center, LLC

Cedar Park Surgery Center, L.L.P. (d/b/a Hill Country Surgery Center)

Central Jersey Surgery Center, LLC

Central Virginia Surgi-Center, L.P. (d/b/a Surgi-Center of Central Virginia)

Chandler Endoscopy Ambulatory Surgery Center, LLC (d/b/a Chandler Endoscopy Center)

Chattanooga Pain Management Center, LLC (d/b/a Chattanooga Pain Surgery Center)

Chesterfield Ambulatory Surgery Center, L.P. (d/b/a Chesterfield Surgery Center)

Chico Surgery Center, LP

Christus Cabrini Surgery Center, L.L.C.

Clarkston ASC Partners, LLC (d/b/a Clarkston Surgery Center)

Clarksville Surgery Center, LLC (d/b/a St. Thomas Surgery Center Clarksville)

Coast Surgery Center, L.P. (d/b/a Coast Surgery Center of South Bay)

Corpus Christi Surgicare, Ltd. (d/b/a 1)CHRISTUS Spohn - Corpus Christi Outpatient Surgery 2)Corpus Christi Outpatient Surgery Center)

Creekwood Surgery Center, L.P.

Crown Point Surgery Center, LLC (d/b/a Crown Point Surgery Center)

CS/USP General Partner, LLC

CS/USP Surgery Centers, LP

Dallas Surgical Partners, LLC (d/b/a 1)Baylor Surgicare 2)Physicians Daysurgery Center)

Day-Op Surgery Consulting Company, LLC (d/b/a 1)USP Administrative Subsidiary 2)Day-Op Consulting)

Denton Surgicare Partners, Ltd. (d/b/a Baylor Surgicare at Denton)

Denton Surgicare Real Estate, Ltd.

Denville Surgery Center, LLC (d/b/a 1) Orthopaedic Surgery Center of Northwest Jersey 2) Surgical Center of Northwest Jersey)

Desert Ridge Outpatient Surgery, LLC

Desoto Surgicare Partners, Ltd. (d/b/a North Texas Surgery Center)

Destin Surgery Center, LLC

DH UAP, LLC

Dignity/USP Folsom GP, LLC

Dignity/USP Grass Valley GP, LLC

Dignity/USP Las Vegas Surgery Centers, LLC

Dignity/USP Metro Surgery Center, LLC

Dignity/USP NorCal Surgery Centers, LLC

Dignity/USP Oxnard Surgery Centers, LLC

Dignity/USP Phoenix Surgery Centers, LLC

Dignity/USP Redding GP, LLC

Dignity/USP Roseville GP, LLC

Doctors Outpatient Surgicenter, Ltd. (d/b/a Doctors Outpatient Surgicenter)

Dreamland UAP Anesthesia, LLC

East Portland Surgery Center, LLC

East West Surgery Center, L.P.

Eastgate Building Center, L.L.C.

Effingham Surgical Partners, LLC (d/b/a Effingham Ambulatory Surgery Center)

Einstein Montgomery Surgery Center, LLC

Einstein/USP Surgery Centers, L.L.C.

El Mirador Surgery Center, LLC

Elite Anesthesia, LLC

Encinitas Endoscopy Center, LLC (d/b/a The Endoscopy Center)

Endoscopy Center of Hackensack, LLC (d/b/a Hackensack Endoscopy Center)

Eye Center of Nashville UAP, LLC

Eye Surgery Center of Nashville, LLC (d/b/a Anesthesia Services of ESCN)

Flatirons Surgery Center, LLC (d/b/a Ambulatory Surgery Centers, Inc.)

Folsom Outpatient Surgery Center, L.P. (d/b/a Folsom Surgery Center)

Fort Worth Hospital Real Estate, L.P.

Fort Worth Surgicare Partners, Ltd. (d/b/a 1)Baylor Surgical Hospital at Fort Worth 2)Medical Centre Surgical Hospital 3)Baylor Surgical Hospital at Fort Worth Outpatient Center)

FPN - FRISCO PHYSICIANS NETWORK (d/b/a Frisco Physicians Network)

Franklin Endo UAP, LLC

Franklin Endoscopy Center, LLC (d/b/a Franklin Surgery Center)

Frisco Medical Center, L.L.P. (d/b/a Baylor Medical Center at Frisco)

Frontenac Ambulatory Surgery & Spine Care Center, L.P. (d/b/a Frontenac Surgery & Spine Care Center)

Gallatin Physician Realty Partners, LLC

Gamma Surgery Center, LLC

Garland Surgicare Partners, Ltd. (d/b/a Baylor Surgicare at Garland)

Gateway Endoscopy Center, L.P. (d/b/a Gateway Endoscopy Center)

Genesis ASC Partners, LLC (d/b/a Genesis Surgery Center)

Georgia Musculoskeletal Network, Inc.

GLS UAP Sugarland, LLC

Grapevine Surgicare Partners, Ltd. (d/b/a Baylor Surgicare at Grapevine)

Grass Valley Outpatient Surgery Center, L.P. (d/b/a Grass Valley Surgery Center)

Greenville Physicians Surgery Center, LLP

Greenwood ASC, LLC (d/b/a Greenwood Ambulatory Surgery Center)

Hacienda Outpatient Surgery Center, LLC (d/b/a Hacienda Surgery Center)

Harvard Park Surgery Center, LLC (d/b/a Harvard Park Surgery Center)

Hazelwood Endoscopy Center, LLC (d/b/a Endoscopy & Colonoscopy Center)

HCH/USP Surgery Centers, LLC

Health Horizons of Kansas City, Inc.

Health Horizons of Murfreesboro, Inc.

Healthmark Partners, Inc.

Hershey Outpatient Surgery Center, L.P.

Hinsdale Surgical Center, LLC

HMHP/USP Surgery Centers, LLC

Houston Ambulatory Surgical Associates, L.P.

Houston PSC, L.P. (d/b/a 1)Physicians Surgicenter of Houston True Results 2)Physicians Surgicenter of Houston)

HUMC/USP Surgery Centers, LLC

ICNU Rockford, LLC

Implant Solutions, LLC

Irving-Coppell Surgical Hospital, L.L.P. (d/b/a 1)Irving Coppell Surgical Hospital 2)Baylor Surgical Hospital at Las Colinas)

Jackson Surgical Center, LLC (d/b/a Jackson Surgery Center)

JFP UAP Sugarland, LLC

KHS Ambulatory Surgery Center LLC (d/b/a Select Surgical Center at Kennedy)

KHS/USP Surgery Centers, LLC

Lake Lansing ASC Partners, LLC (d/b/a Lansing Surgery Center)

Lakewood Surgery Center, LLC

Lansing ASC Partners, LLC

Lawrenceville Surgery Center, L.L.C.

Lebanon Endoscopy Center, LLC (d/b/a Anesthesia Services of Lebanon)

Lee’s Summit Endo UAP, LLC

Legacy/USP Surgery Centers, L.L.C.

Legacy Warren Partners, L.P.

Lewisville Surgicare Partners, Ltd. (d/b/a Baylor Surgicare at Lewisville)

Liberty Ambulatory Surgery Center, L.P.

Liberty Ambulatory Surgery Center, LLC

Liberty/USP Surgery Centers, L.L.C.

Lone Star Endoscopy Center, LLC (d/b/a 1)Lone Star Endoscopy 2)Lone Star Endoscopy Flower Mound)

Manchester Ambulatory Surgery Center, LP (d/b/a Manchester Surgery Center)

Mary Immaculate Ambulatory Surgery Center, LLC

Mason Ridge Ambulatory Surgery Center, L.P. (d/b/a Mason Ridge Surgery Center)

McLaren ASC of Flint, LLC

MCSH Real Estate Investors, Ltd.

Medical Park Tower Surgery Center, LLC

MedPlex Outpatient Surgery Center, Ltd.

MEDSTAR/USP Surgery Centers, L.L.C.

Memorial Hermann Bay Area Endoscopy Center, LLC (d/b/a Bay Area Endoscopy)

Memorial Hermann Endoscopy & Surgery Center North Houston, LLC (d/b/a 1)Memorial Hermann Endoscopy & Surgery Center North Houston 2)North Houston Endoscopy & Surgery)

Memorial Hermann Endoscopy Center North Freeway, LLC (d/b/a Memorial Hermann Endoscopy Center North Loop)

Memorial Hermann Specialty Hospital Kingwood, L.L.C. (d/b/a Memorial Hermann Surgical Hospital Kingwood)

Memorial Hermann Sugar Land Surgical Hospital, LLP (d/b/a 1)Surgical Specialty Hospital of Sugar Land, LLP, an affiliate of Memorial Hermann 2)Memorial Hermann Surgical Hospital First Colony)

Memorial Hermann Surgery Center - The Woodlands, LLP

Memorial Hermann Surgery Center Katy, LLP

Memorial Hermann Surgery Center Kingsland, L.L.C. (d/b/a Memorial Hermann Surgery Center Kingsland)

Memorial Hermann Surgery Center Kirby, LLC

Memorial Hermann Surgery Center Memorial City, LLC (d/b/a Memorial Hermann Memorial Village Surgery Center)

Memorial Hermann Surgery Center Northwest LLP

Memorial Hermann Surgery Center Richmond, LLC (d/b/a Memorial Hermann Surgery Center Richmond)

Memorial Hermann Surgery Center Southwest, L.L.P.

Memorial Hermann Surgery Center Sugar Land, L.L.P.

Memorial Hermann Surgery Center Texas Medical Center, LLP

Memorial Hermann Surgery Center Woodlands Parkway, LLC (d/b/a Memorial Hermann Surgery Center Woodlands Parkway)

Memorial Hermann Texas International Endoscopy Center, LLC (d/b/a Texas International Endoscopy Center)

Memorial Hermann/USP Surgery Centers II, LP

Memorial Hermann/USP Surgery Centers III, LLP

Memorial Hermann/USP Surgery Centers IV, LLP

Memorial Hermann/USP Surgery Centers, LLP

Memorial Surgery Center, LLC (d/b/a Tulsa Surgery Center)

Mercy/USP Health Ventures, L.L.C.

Metro Surgery Center, LLC

Metrocrest Surgery Center, L.P. (d/b/a Baylor Surgicare at Carrollton)

Metroplex Surgicare Partners, Ltd. (d/b/a Baylor Surgicare at Bedford)

Metropolitan New Jersey, LLC (d/b/a Metropolitan Surgery Center)

MH Memorial City Surgery, LLC

MH/USP Bay Area, LLC

MH/USP Kingsland, LLC

MH/USP Kingwood, LLC

MH/USP Kirby, LLC

MH/USP North Freeway, LLC

MH/USP North Houston, LLC

MH/USP Richmond, LLC

MH/USP Sugar Land, LLC

MH/USP TMC Endoscopy, LLC

MH/USP West Houston, L.L.C.

MH/USP Woodlands Parkway, LLC

Michigan ASC Partners, L.L.C.

Mid Rivers Ambulatory Surgery Center, L.P. (d/b/a Mid Rivers Surgery Center)

Mid State Endo UAP, LLC

Middle Tennessee Ambulatory Surgery Center, L.P.

Midland Memorial/USP Surgery Centers, LLC

Midland Texas Surgical Center, LLC (d/b/a 1)Texas Surgical Center, an affiliate of Midland Memorial Hospital 2)Texas Surgical Center)

Mid-State Endoscopy Center, LLC (d/b/a Anesthesia Services of Mstate)

Midwest Digestive Health Center, LLC (d/b/a 1)Midwest Physicians Surgery Center 2)Anesthesia Services of Midwest)

Millennium Surgical Center, LLC

Mountain Empire Surgery Center, L.P.

MSH Partners, LLC (d/b/a 1)Mary Shiels Hospital 2)Baylor Medical Center at Uptown)

New Horizons Surgery Center, LLC

New Mexico Orthopaedic Surgery Center, L.P.

NKCH/USP Briarcliff GP, LLC

NKCH/USP Liberty GP, LLC

NKCH/USP Surgery Centers II, L.L.C.

NKCH/USP Surgery Centers, LLC

North Central Surgical Center, L.L.P. (d/b/a North Central Surgical Center)

North Garland Surgery Center, L.L.P. (d/b/a Baylor Surgicare at North Garland)

North Haven Surgery Center, LLC

North Shore Same Day Surgery, L.L.C. (d/b/a North Shore Surgical Center)

North State Surgery Centers, L.P. (d/b/a Court Street Surgery Center, Mercy Surgery Center and Redding Surgery Center)

Northern Monmouth Regional Surgery Center, L.L.C.

Northridge Surgery Center, L.P.

NorthShore/USP Surgery Centers II, L.L.C.

Northwest Ambulatory Surgery Center, LLC (d/b/a 1)Northwest Surgery Center 2)Northwest Ambulatory Surgery Center)

Northwest Georgia Orthopaedic Surgery Center, LLC

Northwest Regional ASC, LLC

Northwest Surgery Center, LLP

NSCH/USP Desert Surgery Centers, LLC

OCOMS Imaging, LLC

OCOMS Professional Services, LLC

Oklahoma Center for Orthopedic and Multi-Specialty Surgery, LLC

Old Tesson Surgery Center, L.P.

Olive Ambulatory Surgery Center, L.P. (d/b/a Olive Surgery Center)

OLOL Pontchartain Surgery Center, LLC (d/b/a Our Lady of the Lake Surgery Center Pontchartrain)

OLOL/USP Surgery Centers, L.L.C.

Orlando Health/USP Surgery Centers, L.L.C.

OrthoLink ASC Corporation

OrthoLink Physicians Corporation

OrthoLink Radiology Services Corporation

OrthoLink/ Georgia ASC, Inc.

OrthoLink/Baptist ASC, LLC

OrthoLink/New Mexico ASC, Inc.

Orthopedic and Surgical Specialty Company, LLC (d/b/a 1)Arizona Orthopedic Surgical Hospital 2)Arizona Orthopedic and Surgical Specialty Hospital )

Orthopedic South Surgical Partners, LLC (d/b/a Orthopedics South Surgical Center)

Pacific Endo-Surgical Center, L.P.

PAHS/USP Surgery Centers, LLC

Pain Diagnostic and Treatment Center, L.P.

Pain Treatment Centers of Michigan, LLC (d/b/a Matrix Surgery Center)

Paramus Endoscopy, LLC (d/b/a 1)Endoscopy Center of Bergen County 2)Surgical & Endoscopy Center of Bergen County)

Park Cities Surgery Center, LLC

Park Place Investor Group, LP

Parkway Recovery Care Center, LLC

Parkway Surgery Center, LLC

Parkwest Surgery Center, L.P.

Patient Partners, LLC (d/b/a Patient Partners Surgery Center)

Pearland Ambulatory Surgery Center, LP

Peters Township Surgery Center, LLC

Physicians Pavilion, L.P.

Physicians Surgery Center at Good Samaritan, LLC (d/b/a Good Samaritan Surgery Center)

Physician’s Surgery Center of Chattanooga, L.L.C. (d/b/a Anesthesia Services of PSCC)

Physician’s Surgery Center of Knoxville, LLC

Physicians Surgical Center of Ft. Worth, LLP (d/b/a 1)Baylor Surgicare at Fort Worth I 2)Baylor Surgicare at Fort Worth II 3)Physicians Surgical Center of Ft. Worth II)

Providence/USP Santa Clarita GP, LLC (d/b/a Providence Summit Surgery Center)

Providence/USP Surgery Centers, L.L.C.

Radsource, LLC

Reading Ambulatory Surgery Center, L.P. (d/b/a Reading Surgery Center)

Reading Endoscopy Center, LLC

Redmond Surgery Center, LLC

RE Plano Med, Inc.

Resurgens Surgery Center, LLC (d/b/a Resurgens Surgical Center)

Richmond ASC Leasing Company, LLC

River North Same Day Surgery, L.L.C. (d/b/a Sameday Surgery River North)

Riverside Ambulatory Surgery Center, LLC (d/b/a 1)Riverside Surgery Center 2)UAP Riverside 3)The Endoscopy & Colonoscopy Center)

Rockwall Ambulatory Surgery Center, L.L.P. (d/b/a 1)Baylor Surgicare at Rockwall 2)Rockwall Surgery Center )

Rockwall/Heath Surgery Center, L.L.P. (d/b/a Baylor Surgicare at Heath)

Roseville Surgery Center, L.P. (d/b/a Roseville Surgery Center)

Roswell Surgery Center, L.L.C.

Saint Thomas Campus Surgicare, L.P.

Saint Thomas/USP Surgery Centers II, LLC

Saint Thomas/USP Surgery Centers, L.L.C.

Saint Thomas/USP-Baptist Plaza, L.L.C.

Same Day Management, L.L.C.

Same Day Surgery, LLC

San Antonio Endoscopy, L.P.

San Fernando Valley Surgery Center, LP (d/b/a Providence Holy Cross Surgery Center at Mission Hills)

San Gabriel Valley Surgical Center, L.P.

San Martin Surgery Center, LLC (d/b/a Durango Outpatient Surgery Center)

Santa Clarita Surgery Center, L.P.

Scripps Encinitas Surgery Center, LLC

Scripps/USP Surgery Centers, L.L.C.

Shore Outpatient Surgicenter, L.L.C.

Shoreline Real Estate Partnership, LLP

Shoreline Surgery Center, LLP (d/b/a CHRISTUS Spohn—Surgicare of Corpus Christi)

Shrewsbury Surgery Center, LLC

Silicon Valley Outpatient Surgery Centers, LLC

Siouxland Surgery Center Limited Liability Partnership (d/b/a Siouxland Surgery Center)

SKV UAP Sugarland, LLC

SLPA ACO, LLC

South County Outpatient Endoscopy Services, L.P. (d/b/a 1)South County Outpatient Endoscopy Services 2)SCOPES)

Southwest Ambulatory Surgery Center, L.L.C.

Southwest Orthopedic and Spine Hospital Real Estate, LLC

Southwest Orthopedic and Spine Hospital, LLC (d/b/a 1)O:A:S:I:S Hospital 2)O:A:S:I:S: Orthopedic and Spine Inpatient Surgical Hospital )

Southwestern Ambulatory Surgery Center, LLC

Specialty Surgery Center of Fort Worth, L.P. (d/b/a 1)Specialty Surgery Center of Fort Worth 2)Baylor Surgicare at NE Fort Worth 3)Baylor Surgicare at Northeast Fort Worth)

Specialty Surgicenters, Inc.

Spinal Diagnostics and Treatment Centers, LLC

SSI Holdings, Inc.

SSM St. Clare Surgical Center, L.L.C.

St. Joseph’s Outpatient Surgery Center, LLC (d/b/a St. Joseph’s Recovery Care Center)

St. Joseph’s Surgery Center, L.P.

St. Louis Physician Alliance, LLC

St. Louis Surgical Center, LC

St. Mary’s Ambulatory Surgery Center, LLC

St. Mary’s Surgical Center, LLC (d/b/a St. Mary’s Surgical Center)

St. Mary’s/USP Surgery Centers, LLC

St. Vincent Health/USP, LLC

St. Vincent/USP Surgery Centers, LLC

Stockton Outpatient Surgery Center, LLC (d/b/a Ambulatory Surgery Center of Stockton)

Suburban Endoscopy Center, LLC (d/b/a UAP Verona Endo)

Summit View Surgery Center, LLC (d/b/a Summit View Surgery Center)

Sunset Hills Ambulatory Surgery Center, L.P. (d/b/a Sunset Hills Surgery Center)

Surgery Center of Atlanta, LLC

Surgery Center of Canfield, LLC

Surgery Center of Columbia, L.P. (d/b/a Surgery Center of Columbia)

Surgery Center of Gilbert, LLC

Surgery Center of Peoria, LLC

Surgery Center of Richardson Physician Partnership, L.P. (d/b/a 1)Surgery Center of Richardson 2)Baylor Surgicare at Richardson)

Surgery Center of Scottsdale, LLC (d/b/a 1)Mountain View Surgery Center of Glendale 2)Mountain View Surgery Center of Gilbert 3)Mountain View Surgery Center of Phoenix)

Surgery Center of Tempe Real Estate, LLC

Surgery Center of Tempe, LLC (d/b/a Physicians Surgery Center of Tempe)

Surgery Centers of America II, LLC

Surgical Health Partners, LLC

Surgical Specialists at Princeton, LLC

Surgicenter of Baltimore, LLP

Surginet, Inc.

Surgis Management Services, Inc.

Surgis of Chico, Inc.

Surgis of Phoenix, Inc.

Surgis of Redding, Inc.

Surgis of Victoria, Inc.

Surgis, Inc.

Tamarac Surgery Center LLC (d/b/a The Surgery Center of Ft. Lauderdale)

TCH/USP Surgery Centers, LLC

Tempe New Day Surgery Center, L.P. (d/b/a Tempe New Day Surgery Center)

TENN SM, LLC (d/b/a 1)Providence Surgery Center 2)Tennessee Sports Medicine Surgery Center, LLC)

Terre Haute Surgical Center, LLC (d/b/a 1)St. Vincent Surgery Center of Terre Haute 2)Anesthesia Services of Terre Haute)

Teton Outpatient Services, LLC

Texan Ambulatory Surgery Center, L.P. (d/b/a Texan Surgery Center)

Texas Endoscopy Centers, LLC (d/b/a 1)Texas Endoscopy 2)Texas Endoscopy at Independence Medical Village)

Texas Health Venture Arlington Hospital, LLC

Texas Health Venture Carrollton, LLC

Texas Health Venture Ennis, LLC

Texas Health Venture Fort Worth, L.L.C.

Texas Health Venture Granbury, LLC

Texas Health Venture Keller, LLC

Texas Health Venture Las Colinas, LLC

Texas Health Venture Mansfield, LLC

Texas Health Venture Plano Parkway, LLC

Texas Health Venture Plano, LLC

Texas Health Venture Plano Endo, LLC

Texas Health Ventures Group L.L.C.

The Ambulatory Surgical Center of St. Louis, L.P. (d/b/a The Surgical Center of St. Louis)

The Center for Ambulatory Surgical Treatment, L.P.

The Christ Hospital Spine Surgery Center, LLC (d/b/a 1)Mayfield Clinic Spine Surgery Center 2)The Christ Hospital Spine Surgery Center)

The Physicians’ Center, L.P.

The Surgery Center at Williamson, LLC (d/b/a Williamson Surgery Center)

THV Park Cities, LLC

THVG Arlington GP, LLC

THVG Bariatric GP, LLC

THVG Bariatric, L.L.C.

THVG Bedford GP, LLC

THVG Bellaire GP, LLC

THVG Denton GP, LLC

THVG DeSoto GP, LLC

THVG DSP GP, LLC

THVG Fort Worth GP, LLC

THVG Frisco GP, LLC

THVG Garland GP, LLC

THVG Grapevine GP, LLC

THVG Heritage Park, LLC

THVG Irving-Coppell GP, LLC

THVG Lewisville GP, LLC

THVG North Garland GP, LLC

THVG Park Cities/Trophy Club GP, LLC

THVG Rockwall 2 GP, LLC

THVG Rockwall GP, LLC

THVG Valley View GP, LLC

Titan Health Corporation

Titan Health of Chattanooga, Inc.

Titan Health of Hershey, Inc.

Titan Health of Mount Laurel, LLC

Titan Health of North Haven, Inc.

Titan Health of Pittsburgh, Inc.

Titan Health of Pleasant Hills, Inc.

Titan Health of Princeton, Inc.

Titan Health of Sacramento, Inc.

Titan Health of Saginaw, Inc.

Titan Health of Titusville, Inc.

Titan Health of West Penn, Inc.

Titan Health of Westminster, Inc.

Titan Management Corporation

Titusville Center for Surgical Excellence, LLC

TMC Holding Company, LLC

Toms River Surgery Center, L.L.C.

TOPS Specialty Hospital, Ltd. (d/b/a TOPS Surgical Specialty Hospital)

Total Joint Center of St. Louis, LP (d/b/a Total Joint Center of St. Louis)

TP Specialty Surgery Center, L.P. (d/b/a Turning Point Specialty Surgery Center)

Trophy Club Medical Center, L.P. (d/b/a 1)Baylor Medical Center at Trophy Club 2)Baylor Surgicare at Trophy Club)

True Medical Weight Loss, L.P.

True Medical Wellness, L.P.

True Results Georgia, Inc.

True Results Missouri, LLC

Tuscan Surgery Center at Las Colinas, LLC (d/b/a Texas Digestive Disease Center)

Twin Cities Ambulatory Surgery Center, LP (d/b/a Twin Cities Surgery Center)

UAP Chattanooga Pain LLC

UAP Keller Endo, LLC

UAP Las Colinas Endo, LLC

UAP Lebanon Endo, LLC

UAP Nashville Endoscopy, LLC

UAP of Arizona, Inc.

UAP of California, Inc.

UAP of Missouri, Inc.

UAP of New Jersey, Inc.

UAP of Tennessee, Inc.

UAP of Texas, Inc.

UAP Sacramento, LLC

UAP San Antonio Endo, LLC

UAP Scopes, LLC

United Anesthesia Partners, Inc.

United Surgery Center—Southeast, Ltd. (d/b/a United Surgery Center—Southeast )

United Surgical Partners Holdings, Inc.

University Surgery Center, Ltd. (d/b/a University Surgical Center)

University Surgical Partners of Dallas, L.L.P.

Upper Cumberland Physicians’ Surgery Center, LLC

USP Alexandria, Inc.

USP Assurance Company

USP Austin, Inc.

USP Bariatric, LLC

USP Beaumont, Inc.

USP Bergen, Inc.

USP Bloomington, Inc.

USP Bridgeton, Inc.

USP Cedar Park, Inc.

USP Chesterfield, Inc.

USP Chicago, Inc.

USP Cincinnati, Inc.

USP Coast, Inc.

USP Columbia, Inc.

USP Corpus Christi, Inc.

USP Creve Coeur, Inc.

USP Denver, Inc.

USP Des Peres, Inc.

USP Destin, Inc.

USP Domestic Holdings, Inc.

USP Effingham, Inc.

USP Encinitas Endoscopy, Inc.

USP Fenton, Inc.

USP Festus, Inc.

USP Florissant, Inc.

USP Fort Lauderdale, Inc.

USP Fort Worth Hospital Real Estate, Inc.

USP Fredericksburg, Inc.

USP Frontenac, Inc.

USP Gateway, Inc.

USP Harbour View, Inc.

USP Hazelwood, Inc.

USP Houston, Inc.

USP Indiana, Inc.

USP International Holdings, Inc.

USP Jersey City, Inc.

USP Kansas City, Inc.

USP Knoxville, Inc.

USP Little Rock, Inc.

USP Long Island, Inc.

USP Louisiana, Inc.

USP Maryland, Inc.

USP Mason Ridge, Inc.

USP Mattis, Inc.

USP Michigan, Inc.

USP Midland, Inc.

USP Midwest, Inc.

USP Mission Hills, Inc.

USP Morris, Inc.

USP Mt. Vernon, Inc.

USP Nevada, Inc.

USP Nevada Holdings, LLC

USP New Jersey, Inc.

USP Newport News, Inc.

USP North Kansas City, Inc.

USP North Texas, Inc.

USP Northwest Arkansas, Inc.

USP Office Parkway, Inc.

USP Oklahoma, Inc.

USP Olive, Inc.

USP Orlando, Inc.

USP Philadelphia, Inc.

USP Phoenix, Inc.

USP Portland, Inc.

USP Reading, Inc.

USP Richmond II, Inc.

USP Richmond, Inc.

USP Sacramento, Inc.

USP San Antonio, Inc.

USP Securities Corporation

USP Siouxland, Inc.

USP Somerset, Inc.

USP St. Louis, Inc.

USP St. Peters, Inc.

USP Sunset Hills, Inc. (d/b/a 1)Scheduling Solutions 2)USP St. Louis CBO)

USP Tennessee, Inc.

USP Texas Air, L.L.C.

USP Texas, L.P.

USP TJ STL, Inc.

USP Torrance, Inc.

USP Turnersville, Inc.

USP Virginia Beach, Inc.

USP Waxahachie Management, L.L.C

USP Webster Groves, Inc.

USP West Covina, Inc.

USP Westwood, Inc.

USP Winter Park, Inc.

USPI Physician Strategy Group, LLC (d/b/a Physician Strategy Group)

USPI San Diego, Inc.

USPI Stockton, Inc.

USPI Surgical Services, Inc.

Utica ASC Partners, LLC (d/b/a 1)Utica Surgery Center 2)Utica Surgery and Endoscopy Center)

Utica/USP Tulsa, L.L.C.

Valley View Surgicare Partners, Ltd. (d/b/a 1)Baylor Surgicare at Valley View 2)Valley View Surgery Center)

Veroscan, Inc.

Victoria Ambulatory Surgery Center, LP (d/b/a The Surgery Center)

Warner Park Surgery Center, LP (d/b/a Warner Outpatient Surgery Center)

Webster Ambulatory Surgery Center, L.P. (d/b/a Webster Surgery Center)

West Houston Ambulatory Surgical Associates, L.P. (d/b/a 1)West Houston Surgicare 2)Memorial Hermann Surgery Center West Houston)

West Penn Ambulatory Surgical Company, LLC

WHASA, LC

Willamette Spine Center Ambulatory Surgery, LLC