Highest-Volume Leadless Pacemaker Insertion Surgeons in California (2026 update)
31 California providers billed Medicare for Leadless Pacemaker Insertion (CPT 33274) 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 | Leon Feldman, M.D. | Rancho Mirage, CA | 58 |
| 2 | Arshia Noori, MD | Los Angeles, CA | 40 |
| 3 | Nicholas Olson, MD | La Jolla, CA | 36 |
| 4 | Thuy Le, M.D. | Orange, CA | 31 |
| 5 | Evangelos Diamantakos, D.O. | Rancho Mirage, CA | 25 |
| 6 | Andrew Rubin, M.D. | Rancho Mirage, CA | 22 |
| 7 | Steven Fowler, MD | Monterey, CA | 21 |
| 8 | Sam Kalioundji, MD | Northridge, CA | 18 |
| 9 | Raul Oviedo, M.D | National City, CA | 17 |
| 10 | Rahul Bhardwaj, M.D. | Loma Linda, CA | 17 |
21 more California 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 Leadless Pacemaker Insertion in California?
- 31 California providers billed Medicare for Leadless Pacemaker Insertion (CPT 33274) 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.