Highest-Volume TAVR — Transfemoral Surgeons in Colorado (2026 update)
33 Colorado providers billed Medicare for TAVR — Transfemoral (CPT 33361) 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 | Jake Chanin, M.S., M.D. | Denver, CO | 83 |
| 2 | Kortney Robinson, M.D. | Loveland, CO | 76 |
| 3 | Megan Loo | Denver, CO | 70 |
| 4 | John Oldemeyer, M.D. | Fort Collins, CO | 68 |
| 5 | Peter Walinsky, MD | Colorado Springs, CO | 65 |
| 6 | Mark Tuttle, M.D. | Greeley, CO | 62 |
| 7 | Catharine Mcdermott, M.D. | Loveland, CO | 53 |
| 8 | Justin Strote, M.D. | Fort Collins, CO | 50 |
| 9 | Mark Ammons, M.D. | Denver, CO | 49 |
| 10 | John Messenger, MD | Aurora, CO | 41 |
23 more Colorado 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 TAVR — Transfemoral in Colorado?
- 33 Colorado providers billed Medicare for TAVR — Transfemoral (CPT 33361) 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.