| 11TH ST SURGICAL LLC | Organization | PORTSMOUTH |
| ACCESS SURGERY CENTER OF OHIO | Organization | WEST CHESTER |
| ACCOMODATIVE SURGERY CENTER | Organization | BRECKSVILLE |
| ACCOMODATIVE SURGERY CENTER, L.L.C. | Organization | BRECKSVILLE |
| ADVANCED BREAST & COSMETIC SURGERY CENTER | Organization | BEAVERCREEK |
| ADVANCED COSMETIC SURGERY & LASER CENTER OF HYDE PARK, INC. | Organization | CINCINNATI |
| AESTHETIC AND PLASTIC SURGERY, INC | Organization | COLUMBUS |
| AFFILIATED AMBULATORY SURGERY CENTER LLC | Organization | DUBLIN |
| AKRON ENDOSCOPY ASC LLC | Organization | AKRON |
| AKRON SURGICAL ASSOCIATES, LLC | Organization | AKRON |
| AKRON SURGICAL ASSOCIATES, LLC | Organization | AKRON |
| AKRON VASCULAR CARE, LLC | Organization | MUNROE FALLS |
| AKRON WOMAN'S MEDICAL GROUP, INC | Organization | AKRON |
| ALDERMAN & CORLEY, MD'S INC. SURGICAL SUITE | Organization | GROVE CITY |
| ALTERNACARE | Organization | ZANESVILLE |
| ANDERSON ENDOSCOPY CENTER LLC | Organization | CINCINNATI |
| ANDERSON SURGERY CENTER, LLC | Organization | CINCINNATI |
| ANTHONY S. NERI, M.D. INC | Organization | COLUMBUS |
| AP ANESTHESIA CORPORATION | Organization | PIQUA |
| ARCH CITY CHILDRENS SURGERY CENTER LLC | Organization | WESTERVILLE |
| ARROWHEAD PLASTIC SURGEONS, INC. | Organization | MAUMEE |
| ARTISAN SURGERY CENTER | Organization | TOLEDO |
| ASCENT SURGERY CENTER, LLC | Organization | CANTON |
| ASHTABULA SURGERY CENTER LLC | Organization | ASHTABULA |
| ASHTABULA SURGERY CENTER, INC | Organization | ASHTABULA |
| ASHTABULA SURGERY CENTER, LLC | Organization | ASHTABULA |
| ASSOCIATES IN CENTRAL OHIO OBSTETRICS & GYNECOLOGY, INC | Organization | WESTERVILLE |
| ASSOCIATES IN CENTRAL OHIO OBSTETRICS & GYNECOLOGY, INC | Organization | DUBLIN |
| ATHENS SURGERY CENTER LTD | Organization | ATHENS |
| AULTMAN NORTH SURGICAL PARTNERS LLC | Organization | NORTH CANTON |
| AVON SURGERY CENTER | Organization | AVON |
| BARBARA REIHELD, RN | Individual | RAVENNA |
| BEACHWOOD SURGERY CENTER | Organization | BEACHWOOD |
| BEACON ORTHOPAEDIC SURGERY CENTER | Organization | CINCINNATI |
| BEACON ORTHOPAEDICS SURGERY CENTER, LLC | Organization | CINCINNATI |
| BEACON ORTHOPAEDICS SURGERY CENTER, LLC | Organization | CINCINNATI |
| BELMONT EYE CLINIC, INC. | Organization | YOUNGSTOWN |
| BEST CENTERS OF AMERICA-OHIO, LLC | Organization | CINCINNATI |
| BLUE ASH ENDOSCOPY CENTER, LLC | Organization | CINCINNATI |
| BRADENTON SURGERY CENTER LLC | Organization | DUBLIN |
| BRAINARD SURGERY CENTER LLC | Organization | LYNDURST |
| BSMH AMBULATORY VENTURES II LLC | Organization | CANFIELD |
| CAMBRIDGE SURGICAL SUITES, LLC | Organization | CAMBRIDGE |
| CASE CENTER FOR SURGERY & ENDOSCOPY LLC | Organization | LIMA |
| CEI PHYSICIANS PSC LLC | Organization | FRANKLIN |
| CEI PHYSICIANS PSC, LLC | Organization | CINCINNATI |
| CEI PHYSICIANS PSC, LLC | Organization | TALLMADGE |
| CEI PHYSICIANS PSC, LLC | Organization | RICHMOND HEIGHTS |
| CENTER FOR ADVANCED EYE SURGERY, LTD | Organization | POLAND |
| CENTER FOR SPECIALTY SURGERY OF COLUMBUS, LLC | Organization | NEW ALBANY |
| CENTER OF GI ENDOSCOPY | Organization | SOLON |
| CENTRAL OHIO GASTROENTEROLOGY ASSOCIATES,LLC | Organization | COLUMBUS |
| CENTRAL OHIO SURGICAL INSTITUTE, LLC | Organization | NEW ALBANY |
| CENTRAL OHIO UROLOGY SURGERY CENTER, LLC | Organization | COLUMBUS |
| CENTRAL OHIO UROLOGY SURGERY CENTER, LLC | Organization | GAHANNA |
| CHAGRIN SURGERY CENTER, LLC | Organization | BEACHWOOD |
| CHAGRIN VALLEY ANESTHESIA, LLC | Organization | BEACHWOOD |
| CHILDRENS SURGERY CENTER | Organization | COLUMBUS |
| CINCINNATI ASC LLC | Organization | CINCINNATI |
| CINCINNATI CHILDREN'S SURGERY CENTER LLC | Organization | CINCINNATI |