Highest-Volume Robotic Radical Prostatectomy Surgeons in Oregon (2026 update)
11 Oregon providers billed Medicare for Robotic Radical Prostatectomy (CPT 55866) in 2024. The top 10 by case volume are below — the full ranked list, CSV export and competitor-payment intel are available with a DocVol subscription ($199/mo, cancel anytime).
Database refreshed July 2026Live NPPES registryⓘ sources
| # | Surgeon | Location | Medicare cases (2024) |
|---|---|---|---|
| 1 | Christopher Amling, M.D., F.A.C.S. | Portland, OR | 24 |
| 2 | Daniel Willis, M.D. | Bend, OR | 22 |
| 3 | Marc Mcallister, MD | The Dalles, OR | 18 |
| 4 | Patrick Davol, M.D. | Medford, OR | 18 |
| 5 | Sudhir Isharwal, M.D. | Portland, OR | 15 |
| 6 | Hagop Sarkissian, M.D. | Bend, OR | 15 |
| 7 | Thong Bui, MD | Medford, OR | 15 |
| 8 | Marshall Strother, MD | Portland, OR | 14 |
| 9 | Gregory Cost, MD | Tualatin, OR | 13 |
| 10 | Gary Gingrich, M.D. | The Dalles, OR | 11 |
1 more Oregon surgeons in the full list
Plus: who already pays them (Stryker? Medtronic? Arthrex?), CSV export for your CRM, and every other state and procedure.
Search the full databaseFrequently asked questions
- How many surgeons perform Robotic Radical Prostatectomy in Oregon?
- 11 Oregon providers billed Medicare for Robotic Radical Prostatectomy (CPT 55866) in CY2024. CMS suppresses providers with 10 or fewer Medicare patients, so the true count is somewhat higher.
- Where does this data come from?
- CMS Medicare Physician & Other Practitioners (fee-for-service Part B claims, CY2024, released May 2026) and CMS Open Payments. Both are official U.S. federal datasets.
- Does this include all of a surgeon's cases?
- No — it covers traditional Medicare only (no Medicare Advantage, commercial, or Medicaid claims). Absolute volumes undercount total practice, but the ranking of high- vs low-volume surgeons is a strong targeting signal.