| 5720 W. OKLAHOMA AVENUE, LLC | Organization | MILWAUKEE |
| ACCESS MEDICAL CENTER, LLC | Organization | RACINE |
| ADVANCED SPINE CENTER OF WISCONSIN, LLC | Organization | NEENAH |
| ADVANCED SURGERY OF BURLINGTON LLC | Organization | BURLINGTON |
| ADVANCED SURGICAL AND RESTORATIVE CARE LLC | Organization | ALTOONA |
| ADVANCED SURGICAL CENTER LLC | Organization | MOUNT PLEASANT |
| AFFILIATED SURGERY CENTER INC | Organization | MILWAUKEE |
| ALEXANDER EYE SURGERY CENTER, LLC | Organization | APPLETON |
| AMBULATORY SURGICAL CENTER OF STEVENS POINT LLC | Organization | STEVENS POINT |
| AMBULATORY SURGICAL CENTER, LLC | Organization | OSHKOSH |
| APEX ASC KENOSHA LLC | Organization | KENOSHA |
| APEX SURGERY CENTER SC | Organization | OCONOMOWOC |
| APEX SURGICAL CENTER LLC | Organization | OCONOMOWOC |
| APPLETON SURGICAL CENTER LLC | Organization | APPLETON |
| ARTHROSCOPIC SURGERY CENTER, LLC | Organization | APPLETON |
| ASCENSION NE WISCONSIN, INC | Organization | MENASHA |
| ASCENSION WISCONSIN SURGERY CENTER-MOUNT PLEASANT LLC | Organization | MOUNT PLEASANT |
| ASPIRUS STEVENS POINT SURGERY CENTER, LLC | Organization | STEVENS POINT |
| ASSOCIATED SURGICAL AND MEDICAL SPECIALISTS | Organization | FRANKLIN |
| AURORA GI ASC LLC | Organization | WEST ALLIS |
| AURORA MEDICAL GROUP, INC | Organization | MARINETTE |
| AURORA SURGERY CENTERS, LLC | Organization | GREENFIELD |
| AURORA SURGERY CENTERS, LLC | Organization | PLEASANT PRAIRIE |
| AURORA SURGERY CENTERS, LLC | Organization | GERMANTOWN |
| BAYCARE AURORA KAUKAUNA SURGERY CENTER LLC | Organization | KAUKAUNA |
| BELLIN MEMORIAL HOSPITAL INC. | Organization | GREEN BAY |
| BJOSC, LLC | Organization | PLOVER |
| BJOSC, LLC | Organization | WAUSAU |
| BJOSC, LLC | Organization | WAUSAU |
| BROOKFIELD SIGHTLAB, LTD | Organization | BROOKFIELD |
| CEDARCREST SURGERY CENTER LLC | Organization | RICE LAKE |
| CEDARCREST SURGERY CENTER LLC | Organization | RICE LAKE |
| CENTER FOR DIGESTIVE HEALTH LTD | Organization | MILWAUKEE |
| DEAN HEALTH SYSTEMS, INC. | Organization | SUN PRAIRIE |
| DEAN HEALTH SYSTEMS, INC. | Organization | MADISON |
| DIAGNOSTIC & TREATMENT CENTER, LLC | Organization | WESTON |
| DREXEL TOWN SQUARE SURGERY CENTER, LLC | Organization | OAK CREEK |
| EAST MEQUON SURGERY CENTER LLC | Organization | MEQUON |
| EC LASER AND SURGERY INSTITUTE OF WI, LLC | Organization | STEVENS POINT |
| EC LASER AND SURGERY INSTITUTE OF WI, LLC | Organization | WAUSAU |
| ECRK SPECIALIZED TREATMENT CENTER, LLC | Organization | KENOSHA |
| EYE SURGERY & LASER CENTER OF WISCONSIN LLC | Organization | MILWAUKEE |
| EYE SURGERY CENTER OF WISCONSIN, LLC | Organization | OAK CREEK |
| FOND DU LAC SURGERY CENTER, LLC | Organization | FOND DU LAC |
| FOX VALLEY SURGERY CENTER LLC | Organization | APPLETON |
| FRESENIUS ACCESS CARE PHYSICIANS OF MADISON ASC LLC | Organization | MADISON |
| FROEDTERT SURGERY CENTER, LLC | Organization | MILWAUKEE |
| FVOSA SURGICAL PARTNERS, LLC | Organization | APPLETON |
| GASTROINTESTINAL ASSOCIATES ENDOSCOPY CENTER, LLC | Organization | WAUSAU |
| GASTROINTESTINAL ASSOCIATES ENDOSCOPY CENTER, LLC | Organization | STEVENS POINT |
| GENEVA SURGICAL SUITES, LLC | Organization | GENOA CITY |
| GI SPECIALISTS LLC | Organization | WAUKESHA |
| GLSD MEDICAL LLC | Organization | FRANKLIN |
| GREAT LAKES MEDICAL LLC | Organization | FRANKLIN |
| GREAT LAKES SURGERY CENTER LLC | Organization | KENOSHA |
| GREAT LAKES SURGERY LLC | Organization | KENOSHA |
| GREAT MIDWEST MEDICAL, INC. | Organization | BROOKFIELD |
| GREEN BAY ROAD MEDICAL SERVICES INC | Organization | KENOSHA |
| GREEN BAY SURGICAL CENTER | Organization | GREEN BAY |
| HEART & VASCULAR INSTITUTE, LLC | Organization | PEWAUKEE |