One measure shown per center — the one with reportable case volume. Every center reports on a different mix, which is why the full grid below is worth reading.

Center	Colonoscopy nat 9.9	Orthopedic nat 2.4	Urology nat 5.4	General surgery nat 1	Transfer rate	Rating	Recommend	Surveys
FIRST HILL SURGERY CENTER	—	2.3 As expected	5.3 As expected	0.9 As expected	0.125	94	91	199
VIRGINIA MASON MEDICAL CENTER - BELLEVUE ASC	9.1 As expected	2.1 As expected	4.7 As expected	1.1 As expected	0.019	96	97	648
MINOR AND JAMES SURGERY CENTER	—	—	—	—	0	95	96	155
OVERLAKE SURGERY CENTER LLC	10 As expected	—	—	—	0.037	94	94	165
Proliance Eastside Surgery Center	—	2.1 As expected	—	1 As expected	0.1	95	97	159
PROLIANCE HIGHLANDS SURGERY CENTER	—	2.3 As expected	—	1.1 As expected	0.155	95	97	214
PROLIANCE SOUTHWEST SEATTLE SURGERY CENTER	—	2.4 As expected	—	—	0	95	96	145
PROLIANCE SURGERY CENTER AT VALLEY	—	1.9 As expected	—	—	0.189	96	94	203
SEATTLE HAND SURGERY	—	2.3 As expected	—	—	0	97	96	325
SEATTLE ORTHOPEDIC SURGERY CENTER	—	2.3 As expected	—	—	0.081	94	93	180
Seattle Surgery Center	—	2.6 As expected	—	—	0.022	97	96	236
AESTHETIC AND GENERAL DERMATOLOGY OF SEATTLE	—	2.3 As expected	—	0.8 As expected	0	94	94	173
DIGESTIVE HEALTH NETWORK ENDOSCOPY CENTER	11.8 As expected	—	—	—	0.17	94	94	184
PACMED CLINICS	9.3 As expected	—	—	—	0.067	95	93	893
POLYCLINIC INC	9.1 As expected	—	—	—	0.05	96	94	243
THE RETINA SURGERY CENTER	—	—	—	—	0	94	94	124
Westwood Eye Surgery and Laser	—	—	—	—	0	95	96	28
EASTSIDE MEDICAL GROUP	—	2.3 As expected	—	1 As expected	0.119	98	98	125
NORTHWEST EYE SURGEONS	—	—	—	—	0.019	95	97	42
PACIFIC CATARACT & LASER INSTITUTE	—	—	—	—	0	94	92	110
BELLEVUE AMBULATORY SURGERY CENTER	—	—	—	—	—	95	94	812
GH Fremont Endoscopy Center SUB LLC	9.4 As expected	—	—	—	0.035	95	96	134
GH EVERGREEN ENDOSCOPY CENTER SUB LLC	8.8 As expected	—	—	—	—	96	95	110
EASTSIDE ENDOSCOPY CENTER - ISSAQUAH	11.3 As expected	—	—	—	—	96	98	164
EASTSIDE ENDOSCOPY CENTER,PLLC	10 As expected	—	—	—	—	95	94	177
Evergreen Eye Center PLLC	—	—	—	0.9 As expected	—	95	94	173
EVERGREEN EYE SURGERY CENTER	—	—	—	—	—	91	89	150
North Pacific Dermatology PS	—	—	—	1 As expected	—	94	93	177
ANESIS BEL-RED ASC LLC	—	—	—	—	—	94	92	31
EVERGREEN EYE CENTER	—	—	—	—	—	93	90	100
NORTHWEST LASER & SURGERY CENTER	—	—	—	—	—	95	92	91
SPECIALTY EYECARE CENTER	—	—	—	—	—	95	95	61
THE POLYCLINIC PLASTIC SURGERY CENTER	—	—	—	1 As expected	—	98	97	253
REDMOND AMBULATORY SURGERY CENTER	—	—	—	—	—	97	96	324
Sharpevision PLLC	—	—	—	—	0	94	92	292
TUKWILA AMBULATORY SURGERY CENTER	—	—	—	—	0	83	83	36
PLASTIC AND RECONSTRUCTIVE SURGEONS ASC	—	—	—	—	0	—	—	—
VIRGINIA MASON ISSAQUAH	—	—	—	—	0	—	—	—
RAINIER SURGICAL CENTER	—	—	5.7 As expected	—	—	—	—	—
COSMETIC SURGERY & DERMATOLOGY OF ISSAQUAH	—	—	—	1.1 As expected	—	—	—	—
EASTSIDE PODIATRY ASC	—	—	—	—	—	—	—	—
Seattle Facial Plastic Surgery Center	—	—	—	—	—	—	—	—
SEATTLE SPINE INSTITUTE	—	—	—	—	—	—	—	—
BELLEVUE SURGERY CENTER	—	—	—	—	—	—	—	—
NAFICY PLASTIC SURGERY AND REJUVENATION CENTER	—	—	—	—	—	—	—	—
PACIFIC DERMATOLOGY & COSMETIC CENTER	—	—	—	0.9 As expected	—	—	—	—
Acute Pain Therapies ASC	—	—	—	—	—	—	—	—
EAR, NOSE THROAT, FACIAL PLASTIC SURGERY AND ALLER	—	—	—	—	—	—	—	—
ISSAQUAH FOOT & ANKLE SPECIALISTS PLLC	—	—	—	—	—	—	—	—
NORTHWEST EYE SURGEONS	—	—	—	—	—	—	—	—
NORTHWEST NASAL SINUS CENTER	—	—	—	—	—	—	—	—
REMINGTON PLASTIC SURGERY	—	—	—	—	—	—	—	—
SEATTLE PLASTIC SURGERY CENTER	—	—	—	—	—	—	—	—
Marina Park Plastics PLLC	—	—	—	—	—	—	—	—

Rates are per-100 risk-standardized 7-day hospital visits; "nat" is the national rate for that measure. Rating and Recommend are OAS CAHPS linear mean scores (0–100). A dash means CMS did not report a value — usually too few cases, which is not a bad score.

Sources: CMS Provider of Services file (iQIES, 2026 Q2) for the facility list, specialties and room counts; CMS ASCQR facility-level quality measures; CMS OAS CAHPS patient survey. Metro grouping is by CBSA code 42644; the area name is the U.S. Census Bureau's own title for it, not one we invented.