Surgery Center Benchmarks Interstate Ambulatory Surgical Center
3500 North Interstate Avenue, Portland, OR 97227 · (503) 331-6135
CMS Certification Number 38C0001030
- Operating rooms
- 5
- Procedure rooms
- 2
- Ownership
- Non-Profit
Case types filed with CMS
Dental surgeryFoot surgeryOphthalmologyOrthopedic surgeryOtolaryngologyPlastic surgeryOther surgery
Hospital visits after surgery
No measure here has enough case volume for CMS to publish a rate. That is a reporting threshold, not a poor result.
Also filed, without a publishable rate: Orthopedic.
Safety and process measures
| Measure | Rate | Note |
|---|---|---|
| Patient burn | 0 | |
| Patient fall | 0.009 | |
| Wrong site / side / patient / procedure / implant | 0 | |
| Hospital transfer or admission | 0.104 | |
| Normothermia | 99.66 |
What patients said
| Measure | Score (0–100) |
|---|---|
| Overall rating of the facility | 96 |
| Would recommend the facility | 95 |
| Facilities and staff | 98 |
| Communication about the procedure | 97 |
822 completed surveys · 39% response rate · Survey period 10/01/2024 – 09/30/2025
Sources: CMS Provider of Services file (iQIES, 2026 Q2) — address, case types, room counts; CMS ASCQR facility-level file (reporting year 2024) — quality measures; CMS OAS CAHPS facility file — patient experience. Rates are reproduced as CMS publishes them; nothing here is scored or weighted by us. Not medical advice.