Highest-Volume Colonoscopy with Biopsy Surgeons in Wisconsin (2026 update)
267 Wisconsin providers billed Medicare for Colonoscopy with Biopsy (CPT 45380) 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 | Aaron Baltz, MD | Milwaukee, WI | 239 |
| 2 | Srihari Ramanujam, MD | Mequon, WI | 219 |
| 3 | Joseph Kim, M.D. | Milwaukee, WI | 202 |
| 4 | Maqsood Khan, M.D | West Allis, WI | 196 |
| 5 | Tsu-Hon Wang, MD | Beloit, WI | 196 |
| 6 | Anas Raed, M.D. | Milwaukee, WI | 179 |
| 7 | David Stampfl, MD | Green Bay, WI | 177 |
| 8 | Naree Whang, MD | Madison, WI | 172 |
| 9 | Lyndon Hernandez, MD | Milwaukee, WI | 171 |
| 10 | Syed Mehdi, M.D. | Menomonee Falls, WI | 165 |
257 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 Colonoscopy with Biopsy in Wisconsin?
- 267 Wisconsin providers billed Medicare for Colonoscopy with Biopsy (CPT 45380) 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.