Highest-Volume Nasal/Sinus Endoscopy — Surgical Surgeons in Wisconsin (2026 update)
11 Wisconsin providers billed Medicare for Nasal/Sinus Endoscopy — Surgical (CPT 31237) 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 | Richard Schmidt, M.D. | Mequon, WI | 240 |
| 2 | Ethan Handler, MD | Milwaukee, WI | 141 |
| 3 | Christopher Lee, MD | Oak Creek, WI | 127 |
| 4 | Sam Khalili, MD | Milwaukee, WI | 122 |
| 5 | Andrew Vanbruggen, DO | Green Bay, WI | 105 |
| 6 | Ayman Yaish, D.O. | Beaver Dam, WI | 79 |
| 7 | Samuel Racette | Milwaukee, WI | 65 |
| 8 | Ryan Funk, M.D. | Appleton, WI | 57 |
| 9 | Ian Koszewski, M.D. | Madison, WI | 48 |
| 10 | Zachary Zimmerman, M.D. | Beloit, WI | 23 |
1 more Wisconsin 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 Nasal/Sinus Endoscopy — Surgical in Wisconsin?
- 11 Wisconsin providers billed Medicare for Nasal/Sinus Endoscopy — Surgical (CPT 31237) 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.