Highest-Volume Colonoscopy with Biopsy Surgeons in Maryland (2026 update)
314 Maryland 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 | Aminur Khan, M.D. | Baltimore, MD | 357 |
| 2 | Chintamaneni Choudari, M.D. | Hagerstown, MD | 312 |
| 3 | Praveena Velamati, M.D. | Annapolis, MD | 307 |
| 4 | John Bassett, M.D. | Bethesda, MD | 305 |
| 5 | Jahangir Khan, M.D. | Baltimore, MD | 280 |
| 6 | George Kunnackal John, M.D., MSC | Baltimore, MD | 256 |
| 7 | Louis Salas, M.D. | Catonsville, MD | 229 |
| 8 | Joshua Forman, M.D. | Baltimore, MD | 227 |
| 9 | Moustafa Ahmed, M.D. | Frederick, MD | 218 |
| 10 | Thomas Simcox, MD | Annapolis, MD | 218 |
304 more Maryland 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 Maryland?
- 314 Maryland 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.