Highest-Volume Partial Knee Replacement Surgeons in Illinois (2026 update)
14 Illinois 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 | Peter Bonutti, M.D. | Effingham, IL | 31 |
| 2 | Michael O'rourke, MD | Glenview, IL | 30 |
| 3 | Tad Gerlinger, M.D. | Chicago, IL | 29 |
| 4 | Timothy Keating, MD | Morton Grove, IL | 24 |
| 5 | John Daniels, M.D. | Algonquin, IL | 24 |
| 6 | Thomas Ehmke, D.O. | Western Springs, IL | 23 |
| 7 | Cameron Barton, M.D. | Chicago, IL | 18 |
| 8 | Jeremy Oryhon, MD | Barrington, IL | 16 |
| 9 | Tomasz Antkowiak, MD | Bradley, IL | 15 |
| 10 | Phillip Ludkowski, MD | Arlington Heights, IL | 15 |
4 more Illinois 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 Partial Knee Replacement in Illinois?
- 14 Illinois 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.