Highest-Volume Endovenous RF Vein Ablation Surgeons in Iowa (2026 update)
6 Iowa providers billed Medicare for Endovenous RF Vein Ablation (CPT 36475) 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 | William Olson, M.D. | Davenport, IA | 245 |
| 2 | Eric Dippel, M.D. | Davenport, IA | 79 |
| 3 | Dennis Fry, M.D. | West Des Moines, IA | 26 |
| 4 | David Lawrence, MD | Cedar Rapids, IA | 18 |
| 5 | Nicolas Shammas, M.D. | Davenport, IA | 16 |
| 6 | Eric Scott, MD | West Des Moines, IA | 14 |
Frequently asked questions
- How many surgeons perform Endovenous RF Vein Ablation in Iowa?
- 6 Iowa providers billed Medicare for Endovenous RF Vein Ablation (CPT 36475) 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.