| 33RD STREET SURGERY CENTER LLC | BALTIMORE | — |
| AAU GREENBELT ASC LLC | GREENBELT | — |
| ABINGDON SURGICAL CENTER PC | ABINGDON | — |
| ABULATORY PLASTIC SURGERY CENTER ASSOCIATES CHTD | ROCKVILLE | — |
| ADVANCED SURGERY CENTER LLC | ROCKVILLE | — |
| ADVANCED SURGERY CENTER OF BETHESDA LLC | BETHESDA | — |
| ADVANCED SURGICAL CARE OF MARYLAND LLC | LANHAM | — |
| ADVENTIST HEALTH CARE SURGERY CENTER AT NATIONAL HARBOR | OXON HILL | — |
| ALLEGANY AMBULATORY SURGERY CENTER | CUMBERLAND | — |
| AMBER MEADOWS SURGERY CENTER LLC | FREDERICK | — |
| AMBULATORY CENTER FOR AESTHETIC AND RECONSTRUCTIVE SURGERY | FREDERICK | — |
| AMBULATORY ENDOSCOPY CENTER OF MARYLAND | LAUREL | — |
| AMBULATORY FOOT AND ANKLE CENTER INC | SILVER SPRING | — |
| AMBULATORY SURGERY CENTER FOR PELVIC NEURO SCIENCE LLC | LUTHERVILLE TIMONIUM | — |
| AMBULATORY SURGERY CENTER OF B | NORTH BETHESDA | — |
| AMBULATORY UROLOGY SURGICAL CENTER LLC | CUMBERLAND | — |
| AMERICAN ACCESS CARE OF BALTIMORE ASC LLC | NOTTINGHAM | — |
| ANDOCHICK SURGICAL CENTER LLC | FREDERICK | — |
| ANNAPOLIS ENDOSCOPY CENTER LLC | ANNAPOLIS | — |
| ANNAPOLIS ENT SURGICAL CENTER LLC | ANNAPOLIS | — |
| ANNE ARUNDEL DIGESTIVE CENTER | PASADENA | — |
| ANNE ARUNDEL SURGERY CENTER ANNAPOLIS | ANNAPOLIS | — |
| ANNE ARUNDEL SURGERY CENTER PASADENA | PASADENA | — |
| ANNE ARUNDEL UROLOGICAL SURGERY CENTER | ANNAPOLIS | — |
| ANTIETAM UROSURGICAL CENTER LLC ASC | HAGERSTOWN | — |
| ARTURO BETANCOURT MD PA DBA BALTIMORE WASHINGTON EYE CENTER | GLEN BURNIE | — |
| ARUNDEL AMBULATORY SURGERY CENTER | ANNAPOLIS | — |
| ASC DEVELOPMENT COMPANY LLC | FREDERICK | — |
| ASC DEVELOPMENT COMPANY LLC | BEL AIR | — |
| ASC DEVELOPMENT COMPANY LLC | COLUMBIA | — |
| ASC DEVELOPMENT COMPANY LLC | PIKESVILLE | — |
| ASC DEVELOPMENT COMPANY LLC | BOWIE | — |
| ASC DEVELOPMENT COMPANY LLC | HAGERSTOWN | — |
| ASC DEVELOPMENT COMPANY LLC | WHITE PLAINS | — |
| ASC DEVELOPMENT COMPANY LLC | GERMANTOWN | — |
| AZAR EYE SURGERY CENTER LLC | SALISBURY | — |
| BALTIMORE AMBULATORY CENTER FOR ENDOSCOPY | BALTIMORE | — |
| BALTIMORE COLUMBIA SURGERY CENTER LLC | ELLICOTT CITY | — |
| BALTIMORE EYE SURGICAL CENTER LLC | BALTIMORE | — |
| BALTIMORE HARFORD SURGICAL CENTERS | BEL AIR | — |
| BAY SURGERY CENTERS GLEN BURNIE | GLEN BURNIE | — |
| BAY SURGERY CENTERS KENT ISLAND | STEVENSVILLE | — |
| BAY SURGERY CENTERS LLC DBA CLEARWAY SURGERY CENTER OF ANNAPOLIS | ANNAPOLIS | — |
| BAY SURGERY CENTERS WALDORF LLC DBA CLEARWAY SURGERY CENTER OF WALDORF | WALDORF | — |
| BEL AIR AMBULATORY SURGICAL CENTER LLC | FOREST HILL | — |
| BELCREST SURGERY CENTER | HYATTSVILLE | — |
| BELMONT SURGERY CENTER LLC | CHEVY CHASE | — |
| BELTSVILLE AMBULATORY SURGERY CENTER INC | BELTSVILLE | — |
| BERGMAN EYE SURGERY CENTER LLC | HAGERSTOWN | — |
| BETHESDA CHEVY CHASE SURGERY CENTER LLC DBA BETHESDA CHEVY CHASE SURGERY CENTER | BETHESDA | — |
| BETHESDA ENDOSCOPY CENTER LLC | BETHESDA | — |
| BETHESDA ENDOSCOPY CENTER LLC | NORTH BETHESDA | — |
| CALVERT AMBULATORY FOOT SURGERY CENTER | PRINCE FREDERICK | — |
| CALVERT DIGESTIVE DISEASE ASSOCIATES ENDOSCOPY AND SURGERY CENTER LLC | PRINCE FREDERICK | — |
| CAPITAL ENDOSCOPY LLC | HYATTSVILLE | — |
| CAPITAL ORTHOPAEDIC SURGERY CENTER LLC | GERMANTOWN | — |
| CAPITOL SURGICAL CENTER LLC | BETHESDA | — |
| CARROLL COUNTY AMBULATORY SURGICAL CENTER | WESTMINSTER | — |
| CARROLL COUNTY DIGESTIVE DISEASE CENTER LLC | WESTMINSTER | — |
| CARROLL COUNTY EYE SURGERY CENTER LLC | WESTMINSTER | — |
| CASCADES ENDOSCOPY CENTER LLC | COLUMBIA | — |
| CEC SURGICAL SERVICES LLC | SALISBURY | — |
| CENTER FOR PAIN MANAGEMENT ASC LLC | GLEN BURNIE | — |
| CENTRAL MARYLAND ENDOSCOPY LLC | ELKRIDGE | — |
| CHARLES REGIONAL SURGICAL CENTER LLC | LA PLATA | — |
| CHESAPEAKE EYE SURGERY CENTER LLC | ANNAPOLIS | — |
| CHEVY CHASE ENDOSCOPY CENTER | CHEVY CHASE | — |
| CIVISTA CLINICAL SERVICES DBA UM CHARLES REGIONAL ENDOSCOPY CENTER | LA PLATA | — |
| CLEARWAY SURGERY CENTER OF BEL AIR LLC | BEL AIR | — |
| CLEARWAY SURGERY CENTER OF BETHESDA LLC | BETHESDA | — |
| CLEARWAY SURGERY CENTER OF CATONSVILLE | BALTIMORE | — |
| CLEARWAY SURGERY CENTER OF COLUMBIA | | — |
| CLEARWAY SURGERY CENTER OF DUNDALK | DUNDALK | — |
| CLEARWAY SURGERY CENTER OF EASTON LLC | EASTON | — |
| CLEARWAY SURGERY CENTER OF ELKTON LLC | ELKTON | — |
| CLEARWAY SURGERY CENTER OF PRINCE FREDERICK LLC | PRINCE FREDERICK | — |
| CLEARWAY SURGERY CENTER OF SALISBURY LLC | SALISBURY | — |
| CLEARWAY SURGERY CENTER OF WESTMINSTER LLC | WESTMINSTER | — |
| CLINICAL ASSOCIATES PA DBA CLINICAL ASSOCIATES ASC | TOWSON | — |
| COLLEGE PARK SURGERY CENTER LLC | GLENN DALE | — |
| COLUMBIA SURGICAL INSTITUTE LLC | ELKRIDGE | — |
| COSMETIC SURGERY FACILITY LLC | LUTHERVILLE TIMONIUM | — |
| COURT ENDOSCOPY CENTER OF FREDERICK INC | FREDERICK | — |
| CROSSROADS PODIATRIC SURGERY CENTER LLC | OWINGS MILLS | — |
| CUMBERLAND VALLEY SURGERY CENTER | HAGERSTOWN | — |
| DEER POINTE SURGICAL CENTER LLC | SALISBURY | — |
| DELMAR SURGICAL CENTER LLC | ELKTON | — |
| DELMARVA ENDOSCOPY CENTER LLC | BERLIN | — |
| DIALYSIS ACCESS SERVICES LLC | TIMONIUM | — |
| DIALYSIS ACCESS SERVICES LLC | BALTIMORE | — |
| DISTRICT SURGERY CENTER LLC | BETHESDA | — |
| DOWNTOWN BALTIMORE SURGERY CENTER LLC | BALTIMORE | — |
| DULANEY EYE INSTITUTE | TOWSON | — |
| DUNDALK AMBULATORY SURG CNTR | BALTIMORE | — |
| EASTERN SHORE ENDOSCOPY LLC | EASTON | — |
| ELKRIDGE ASC LLC | ELKRIDGE | — |
| ELLICOTT CITY AMBULATORY SURGERY CENTER LLLP | ELLICOTT CITY | — |
| ENDOCENTRE AT QUARTERFIELD STATION | GLEN BURNIE | — |
| ENDOCENTRE OF BALTIMORE | BALTIMORE | — |
| ENDOSCOPIC SURGICAL CENTER OF MARYLAND NORTH | ROCKVILLE | — |