Highest-Volume Radiofrequency Ablation — Lumbar Facet Surgeons in Colorado (2026 update)
92 Colorado providers billed Medicare for Radiofrequency Ablation — Lumbar Facet (CPT 64635) 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 | George Girardi, M.D. | Fort Collins, CO | 159 |
| 2 | Michael Brown, DO | Fort Collins, CO | 113 |
| 3 | Daniel Drennan, M.D. | Golden, CO | 96 |
| 4 | Chris Malinky, MD | Colorado Springs, CO | 95 |
| 5 | Luke Johnson, M.D. | Wheat Ridge, CO | 94 |
| 6 | Michael Horner, D.O. | Golden, CO | 92 |
| 7 | Mallikarjuna Nallegowda, M.D, DNB, MNAMS | Pueblo, CO | 83 |
| 8 | Stephen Scheper, D.O. | Colorado Springs, CO | 76 |
| 9 | David Columbus, D.O. | Loveland, CO | 67 |
| 10 | Colin Carpenter, M.D. | Fort Collins, CO | 67 |
82 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 Radiofrequency Ablation — Lumbar Facet in Colorado?
- 92 Colorado providers billed Medicare for Radiofrequency Ablation — Lumbar Facet (CPT 64635) 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.