| ADVANCED ENDOSCOPY CENTER PLLC | VANCOUVER | — |
| AESTHETIC AND GENERAL DERMATOLOGY OF SEATTLE | BURIEN | — |
| AESTHETIC ASSOCIATES INC | SEATTLE | — |
| AESTHETIC EYE ASSOCIATES PS | KIRKLAND | — |
| APEX SPINE INSTITUTE | RICHLAND | — |
| BELLEVUE AMBULATORY SURGERY CENTER | BELLEVUE | — |
| BELLINGHAM EAR NOSE THROAT AND FACIAL SURGERY INC | BELLINGHAM | — |
| BELLINGHAM UROLOGY GROUP PLLC | BELLINGHAM | — |
| BEL RED AMBULATORY SURGICAL FACILITY | BELLEVUE | — |
| BLACKBURN AND WHITNEY MD PS DBA PLASTIC SURGERY BELLINGHAM | BELLINGHAM | — |
| CASCADE EYE AND SKIN CENTERS PC | PUYALLUP | — |
| CASCADE VALLEY ARLINGTON SURGERY CENTER | ARLINGTON | — |
| CENTER FOR MINIMALLY INVASIVE SURGERY PLLC | TACOMA | — |
| CHESNUT INSTITUTE OF COSMETIC RECONSTRUCTIVE SUR | SPOKANE | — |
| CLEARVIEW EYE AND LASER PLLC | SEATTLE | — |
| COLUMBIA RIVER EYE CENTER | RICHLAND | — |
| COLUMBIA SURGERY CENTER LLC | SPOKANE | — |
| COSMETIC SURGERY DERMATOLOGY OF ISSAQUAH | ISSAQUAH | — |
| CREEKSIDE SURGERY CENTER | YAKIMA | — |
| DIGESTIVE DISEASE AND ENDOSCOPY CENTER PLLC | SILVERDALE | — |
| EASTSIDE ENDOSCOPY CENTER PLLC | ISSAQUAH | — |
| EASTSIDE ENDOSCOPY CENTER PLLC | BELLEVUE | — |
| EASTSIDE MEDICAL GROUP LLC | ISSAQUAH | — |
| EASTSIDE PODIATRY ASC | BELLEVUE | — |
| EDMONDS ENDOSCOPY CENTER | EDMONDS | — |
| EHLERS EYE SURGERY LLC | YAKIMA | — |
| EVERGREEN EYE CENTER | TACOMA | — |
| EVERGREEN EYE CENTER | FEDERAL WAY | — |
| EVERGREEN EYE CENTER | SEATTLE | — |
| EYE ASSOCIATES NORTHWEST SURGERY CENTER | SEATTLE | — |
| EYE ASSOCIATES SURGERY CENTER INC | MOUNT VERNON | — |
| EYE CARE SPECIALISTS PS | CLARKSTON | — |
| FIRST HILL SURGERY CENTER LLC | SEATTLE | — |
| FOOT AND ANKLE SURGERY ASSOCIATES INC PS | TUMWATER | — |
| FOOT SURGICAL CENTER OF ISSAQUAH | ISSAQUAH | — |
| FOURTH CORNER NEUROSURGICAL ASSOCIATES INC PS DBA CASCADE OUTPATIENT SPINE CENTER | BELLINGHAM | — |
| GASTROENTEROLOGY ASSOCIATES LLC | OLYMPIA | — |
| HARBOR PLASTIC SURGERY CENTER PLLC | GIG HARBOR | — |
| HIGH DESERT SURGERY CENTER LLC | KENNEWICK | — |
| INLAND NORTHWEST SURGERY CENTER PLLC | SPOKANE VALLEY | — |
| KADLEC REGIONAL MEDICAL CENTER | RICHLAND | — |
| KADLEC REGIONAL MEDICAL CENTER DBA KADLEC AMBULATORY ENDOSCOPY CENTER LEE CAMPUS | RICHLAND | — |
| LASER AND SURGERY CENTRE LLC | LACEY | — |
| LONGVIEW SURGICAL CENTER LLC | LONGVIEW | — |
| MERIDIAN SURGERY CENTER | PUYALLUP | — |
| MID COLUMBIA ENDOSCOPY CENTER LLC | KENNEWICK | — |
| MOUNTAIN WEST DERM BLACKHART DBA ADVANCED DERMATOLOGY SKIN SURGERY | SPOKANE VALLEY | — |
| MULTICARE HEALTH SYSTEM | SPOKANE | — |
| NEOSPINE PUYALLUP SPINE CENTER LLC | PUYALLUP | — |
| NEOS SURGERY CENTER | SPOKANE | — |
| NORTH KITSAP AMBULATORY SURGERY CENTER INC | POULSBO | — |
| NORTH PACIFIC DERMATOLOGY PS | BELLEVUE | — |
| NORTHWEST AMBULATORY SURGERY SERVICES LLC DBA BELLINGHAM AMBULATORY SURGERY CENTER | BELLINGHAM | — |
| NORTHWEST ENDOSCOPY CENTER LLC | BELLINGHAM | — |
| NORTHWEST EYE SURGEONS | MOUNT VERNON | — |
| NORTHWEST EYE SURGEONS | SEATTLE | — |
| NORTHWEST EYE SURGEONS | SEQUIM | — |
| NORTHWEST EYE SURGEONS | RENTON | — |
| NORTHWEST ORTHOPAEDIC SPECIALISTS PS | SPOKANE | — |
| NORTHWEST ORTHOPAEDIC SPECIALISTS PS | SPOKANE VALLEY | — |
| NORTHWEST SURGERY CENTER | SPOKANE | — |
| NORTHWEST VISION INSTITUTE PLLC | BELLEVUE | — |
| OLYMPIA MULTI SPECIALTY CLINIC AMBULATORY PROCEDURES CNTR PLLC | OLYMPIA | — |
| OLYMPIA ORTHOPAEDIC ASSOCIATES PLLC DBA OLYMPIA SURGERY CENTER | OLYMPIA | — |
| OVERLAKE AMBULATORY SURGERY CENTER LLC | BELLEVUE | — |
| PACIFIC CATARACT AND LASER INSTITUTE INC PC | VANCOUVER | — |
| PACIFIC CATARACT AND LASER INSTITUTE INC PC | BELLINGHAM | — |
| PACIFIC CATARACT AND LASER INSTITUTE INC PC | BELLEVUE | — |
| PACIFIC CATARACT AND LASER INSTITUTE INC PC | YAKIMA | — |
| PACIFIC CATARACT AND LASER INSTITUTE INC PC | SPOKANE VALLEY | — |
| PACIFIC CATARACT AND LASER INSTITUTE INC PC | TACOMA | — |
| PACIFIC CATARACT AND LASER INSTITUTE INC PC | OLYMPIA | — |
| PACIFIC CATARACT AND LASER INSTITUTE INC PC | SILVERDALE | — |
| PACIFIC CATARACT AND LASER INSTITUTE INC PC | CHEHALIS | — |
| PACIFIC CATARACT AND LASER INSTITUTE INC PC | KENNEWICK | — |
| PACIFIC DERMATOLOGY AND COSMETIC CENTER | SEATTLE | — |
| PACIFIC GASTROENTEROLOGY PLLC | VANCOUVER | — |
| PACIFIC NORTHWEST EYE SURGERY CENTER | TACOMA | — |
| PACIFIC NORTHWEST UROLOGY SURGERY CENTER | BELLINGHAM | — |
| PACIFIC RIM OUTPATIENT SURGERY CENTER | BELLINGHAM | — |
| PACMED ASC | SEATTLE | — |
| PAIN CARE PHYSICIANS PLLC | OLYMPIA | — |
| PARKWAY SURGICAL CENTER LLC | BELLINGHAM | — |
| PEACEHEALTH ASC BELLINGHAM LLC DBA PEACEHEALTH SQUALICUM SURGERY CENTER | BELLINGHAM | — |
| PEACEHEALTH GASTROENTEROLOGY ENDOSCOPY CENTER | LONGVIEW | — |
| PHYSICIANS EYE SURGERY CENTER INC | EVERETT | — |
| PINNACLE PAIN SERVICES INC | BELLINGHAM | — |
| PLASTIC AND RECONSTRUCTIVE SURGEONS | RENTON | — |
| PLASTIC SURGICENTRE INC | SPOKANE | — |
| PROLIANCE CENTER FOR OUTPATIENT SPINE AND JOINT REPLACEMENT SURGERY OF PUGET SOUND | MOUNTLAKE TERRACE | — |
| PROLIANCE HIGHLANDS SURGERY CENTER | ISSAQUAH | — |
| PROLIANCE SURGEONS INC PS | EVERETT | — |
| PROLIANCE SURGEONS INC PS | PUYALLUP | — |
| PROLIANCE SURGEONS INC PS | LAKEWOOD | — |
| PROLIANCE SURGEONS INC PS | EDMONDS | — |
| PROLIANCE SURGEONS INC PS | SEATTLE | — |
| PROLIANCE SURGEONS INC PS | SEATTLE | — |
| PROLIANCE SURGEONS INC PS | BURIEN | — |
| PROLIANCE SURGEONS INC PS | MOUNT VERNON | — |
| PROLIANCE SURGEONS INC PS | BELLEVUE | — |