| ADVANCED VISION SURGERY CENTER LLC | LONGMONT | — |
| ALPINE SURGERY CENTER | GUNNISON | — |
| ARAPAHOE SURGICENTER LLC | LITTLETON | — |
| ARETE SURGICAL CENTER | JOHNSTOWN | — |
| ASCENT SURGERY CENTER LLC | COLORADO SPRINGS | — |
| AUDUBON AMBULATORY SURGERY CENTER LLC | COLORADO SPRINGS | — |
| AUDUBON AMBULATORY SURGERY CENTER LLC DBA AUDUBON ASC AT ST FRANCIS | COLORADO SPRINGS | — |
| BANNER HEALTH MOUNTAIN VISTA SURGERY CENTER | GREELEY | — |
| BLACK CANYON SURGICAL CENTER LLC | MONTROSE | — |
| BOULDER COMMUNITY MUSCULOSKELETAL CENTER | BOULDER | — |
| BOULDER MEDICAL CENTER PC | BOULDER | — |
| BROOMFIELD ORTHOPEDIC SURGERY CENTER LLC | BROOMFIELD | — |
| CANON CITY CO MULTI SPECIALTY ASC LLC | CANON CITY | — |
| CANYON VIEW SURGERY CENTER LLC | GRAND JUNCTION | — |
| CASTLE ROCK SURGICENTER LLC | CASTLE ROCK | — |
| CENTRUM SURGERY CENTER LTD | GREENWOOD VILLAGE | — |
| CLEAR CREEK SURGERY CENTER LLC | WHEAT RIDGE | — |
| COAL CREEK ASC | LAFAYETTE | — |
| COLORADO SPRINGS SURGICENTER DBA NORTH SPRINGS SURGERY CENTER | COLORADO SPRINGS | — |
| COLORADO UROLOGIC SURGERY CENTER | SUPERIOR | — |
| COLORADO UROLOGIC SURGERY CENTER | LAKEWOOD | — |
| COLORADO UROLOGIC SURGERY CENTER LLC | LONE TREE | — |
| CROWN POINT SURGERY CENTER | PARKER | — |
| DAVITA MEDICAL COLORADO ASC LLC DBA DIGESTIVE DISEASE ENDOSCOPY CENTER | COLORADO SPRINGS | — |
| DAY SURGERY OF GRAND JUNCTION | GRAND JUNCTION | — |
| DENVER DIAGNOSTIC ASC LLC | GREENWOOD VILLAGE | — |
| DENVER EYE SURGERY CENTER | LAKEWOOD | — |
| DENVER MID TOWN SURGERY CENTER LTD | DENVER | — |
| DENVER SURGICENTER LLC | DENVER | — |
| DENVER WEST ENDOSCOPY CENTER LLC | LAKEWOOD | — |
| DENVER WEST ENDOSCOPY CENTER LLC | LAKEWOOD | — |
| DOWNTOWN DENVER ENDOSCOPY CENTER LLC | DENVER | — |
| DRY CREEK SURGERY CENTER LLC | ENGLEWOOD | — |
| DTC SURGERY CENTER LLC | DENVER | — |
| DURANGO SURGERY CENTER LLC DBA ANIMAS SURGICAL CENTER AT ESCALANTE | DURANGO | — |
| ECCS ACQUISITION COMPANY LLC DBA ECCS AT ST FRANCIS | COLORADO SPRINGS | — |
| ECCS ACQUISITION COOMPANY DBA ENDOSCOPY CENTERS OF COLORADO SPRINGS | COLORADO SPRINGS | — |
| ENDOSCOPY CENTER OF GRAND JUNCTION | GRAND JUNCTION | — |
| ENDOSCOPY CENTER OF THE ROCKIES LLC | BOULDER | — |
| ENDOSCOPY CENTER OF THE ROCKIES LLC | LONGMONT | — |
| ENDOSCOPY CENTER OF THE ROCKIES LLC | LAFAYETTE | — |
| ENDOSCOPY CENTER OF WESTERN COLORADO INC | GRAND JUNCTION | — |
| FLATIRONS SURGERY CENTER LLC | LOUISVILLE | — |
| FOCUS HAND SURGICENTER LLC | ENGLEWOOD | — |
| FOOTHILLS SURGERY CENTER LLC | BOULDER | — |
| FOOT SURGERY CENTER OF NORTHERN COLORADO LLC | FORT COLLINS | — |
| FRONT RANGE ENDOSCOPY CENTERS LLC | COLORADO SPRINGS | — |
| FRONT RANGE ORTHOPEDIC SURGERY CENTER LLC | LONGMONT | — |
| FUNCTIONAL NEUROSURGICAL AMBULATORY SURGERY CENTERLLC | LITTLETON | — |
| GOLDEN RIDGE SURGERY CENTER | GOLDEN | — |
| GRAND VALLEY SURGICAL CENTER LLC | GRAND JUNCTION | — |
| GREELEY ENDOSCOPY CENTER | GREELEY | — |
| GS CAMPUS ASC DBA LAFAYETTE SURGERY CENTER | LAFAYETTE | — |
| HARMONY SURGERY CENTER LLC | FORT COLLINS | — |
| HARVARD PARK SURGERY CENTER LLC | DENVER | — |
| HEALTHONE RIDGE VIEW ENDOSCOPY CENTER LLC | LONE TREE | — |
| HEALTHONE RIDGE VIEW ENDOSCOPY CENTER LLC | ENGLEWOOD | — |
| HIGHLINE SOUTH AMBULATORY SURGERY | LITTLETON | — |
| ICON SURGERY CENTER OF DENVER | ENGLEWOOD | — |
| INSIGHT SURGERY CENTER | LONE TREE | — |
| KAISER PERMANENTE | LONE TREE | — |
| KAISER PERMANENTE SURGERY CTR | DENVER | — |
| LINCOLN SURGERY CENTER LLC | PARKER | — |
| LITTLETON DAY SURGERY CENTER LLC | LITTLETON | — |
| LONE TREE SURGERY CENTER | LONE TREE | — |
| LOVELAND ENDOSCOPY CENTER LLC | LOVELAND | — |
| LOVELAND SURGERY CENTER | LOVELAND | — |
| LUTHERAN CAMPUS ASC | WHEAT RIDGE | — |
| MADISON STREET SURGERY CENTER LLC | DENVER | — |
| MILE HIGH SURGICENTER LLC | GREENWOOD VILLAGE | — |
| MILESTONE SURGICAL CENTER LLC | PARKER | — |
| MINERAL SURGERY CENTER LLC | LITTLETON | — |
| MOUNTAIN VIEW SURGICAL SPECIALISTS | DENVER | — |
| NATURAL EYES LASER AND SURGERY CENTER LLLP | COLORADO SPRINGS | — |
| NORTH CARE ASC LLC | COLORADO SPRINGS | — |
| NORTH DENVER MUSCULOSKELETAL SURGICAL PARTNERS LLC | WESTMINSTER | — |
| NORTHGLENN ENDOSCOPY CENTER LLC | DENVER | — |
| NORTH SUBURBAN SPINE CENTER LP | THORNTON | — |
| NOVAMED EYE SURGERY CENTER OF COLORADO SPRINGS DBA PREMIER SURGERY CENTER | COLORADO SPRINGS | — |
| NOVAMED SURGERY CENTER OF DENVER LLC | ENGLEWOOD | — |
| OCR FORT COLLINS ASC AND CCC DBA OCR FORT COLLINS SURGERY CENTER | FORT COLLINS | — |
| OCR LOVELAND SURGERY CENTER | LOVELAND | — |
| OPTUM PEAK ENDOSCOPY CENTER LLC | COLORADO SPRINGS | — |
| PARK AVENUE SURGERY CENTER LLC | DENVER | — |
| PARK MEADOWS OUTPATIENT SURGERY | LONE TREE | — |
| PARK RIDGE SURGERY CENTER LLC | LONE TREE | — |
| PARKWEST SURGERY CENTER LLC | PUEBLO | — |
| PEAK ONE SURGERY CENTER | FRISCO | — |
| PEAK SURGERY CENTER LLC | COLORADO SPRINGS | — |
| PIKES PEAK ENDOSCOPY AND SURGERY CENTER LLC | COLORADO SPRINGS | — |
| PREMIER EYE SURGERY CENTER | LAFAYETTE | — |
| PUEBLO AMBULATORY SURGERY CENTER LLC | PUEBLO | — |
| PUEBLO ENDOSCOPY SUITES LLC | PUEBLO | — |
| RED ROCKS SURGERY CENTERS LLC | GOLDEN | — |
| RESEARCH SURGICAL CENTER LLC | COLORADO SPRINGS | — |
| RIVER POINT SURGERY CENTER LLC | SHERIDAN | — |
| ROCKY MOUNTAIN ENDOSCOPY CENTERS LLC | LAKEWOOD | — |
| ROCKY MOUNTAIN ENDOSCOPY CENTERS LLC | AURORA | — |
| ROCKY MOUNTAIN ENDOSCOPY CENTERS LLC | THORNTON | — |
| ROCKY MOUNTAIN LASER AND SURGERY CENTER | PUEBLO | — |