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
The Corvallis Clinic Surgery Center	10.2 As expected	2.9 As expected	6.8 As expected	0.9 As expected	0.183	94	92	228
Samaritan Endoscopy Center, LLC	10.8 As expected	—	—	—	0.086	93	93	668
BSM Surgery Center, LLC	—	2.5 As expected	—	—	0	—	—	—

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 18700; the area name is the U.S. Census Bureau's own title for it, not one we invented.