Highest-Volume Colonoscopy with Biopsy Surgeons in Maine (2026 update)
63 Maine 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 | Abby Sapp, D.O. | Rockport, ME | 254 |
| 2 | Sakdhisapol Katanyutanon, M.D. | Waterville, ME | 142 |
| 3 | Jean Larson, MD | Bangor, ME | 91 |
| 4 | Hatem Shoukeir, M.D. | Bangor, ME | 89 |
| 5 | John Thompson, D.O. | Kennebunk, ME | 84 |
| 6 | Pearl Princess Uy, M.D. | Bangor, ME | 75 |
| 7 | Catherine Mccrann, MD | Lewiston, ME | 72 |
| 8 | Christopher Kleeman, M.D. | South Portland, ME | 69 |
| 9 | Thalia Mayes, M.D. | Portland, ME | 69 |
| 10 | John Walker, D.O. | Portland, ME | 65 |
53 more Maine 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 Maine?
- 63 Maine 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.