Highest-Volume Pacemaker — Dual Chamber Surgeons in Iowa (2026 update)
33 Iowa providers billed Medicare for Pacemaker — Dual Chamber (CPT 33208) 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 | Weiwei Li, M.B. | Cedar Rapids, IA | 57 |
| 2 | Lucas Groben, DO | West Des Moines, IA | 45 |
| 3 | Michael Spooner, M.D. | Mason City, IA | 45 |
| 4 | Frank Haugland, M.D. | Waterloo, IA | 43 |
| 5 | Mark Milton, MD | Cedar Rapids, IA | 42 |
| 6 | Paul Okhumale, M.D. | Waterloo, IA | 36 |
| 7 | Suzanne Feigofsky, M.D. | West Des Moines, IA | 35 |
| 8 | Joseph Ayoub, M.D. | Council Bluffs, IA | 34 |
| 9 | Stuart Christenson, MD | Ames, IA | 34 |
| 10 | David Hamon, MD | Iowa City, IA | 33 |
23 more Iowa 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 Pacemaker — Dual Chamber in Iowa?
- 33 Iowa providers billed Medicare for Pacemaker — Dual Chamber (CPT 33208) 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.