Highest-Volume Partial Knee Replacement Surgeons in Washington (2026 update)
10 Washington providers billed Medicare for Partial Knee Replacement (CPT 27446) 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 | Jerome Zechmann, M.D. | Olympia, WA | 42 |
| 2 | Jason Grassbaugh, MD | Tacoma, WA | 30 |
| 3 | Stacia Smith, M.D. | Mount Vernon, WA | 25 |
| 4 | John West, M.D. | Poulsbo, WA | 19 |
| 5 | Nathaniel Wingert, MD | Kirkland, WA | 16 |
| 6 | Bill Huang, M.D. | Everett, WA | 16 |
| 7 | Christopher Sheu, MD | Mount Vernon, WA | 15 |
| 8 | Christopher Boone, M.D. | Bellevue, WA | 13 |
| 9 | Michael Picco, DO | Mount Vernon, WA | 13 |
| 10 | Alexander Willis, M.D. | Mount Vernon, WA | 11 |
Frequently asked questions
- How many surgeons perform Partial Knee Replacement in Washington?
- 10 Washington providers billed Medicare for Partial Knee Replacement (CPT 27446) 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.