Highest-Volume ESWL — Shockwave Lithotripsy Surgeons in California (2026 update)
44 California providers billed Medicare for ESWL — Shockwave Lithotripsy (CPT 50590) 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 | Nadeem Rahman, MD | Clovis, CA | 83 |
| 2 | Christopher Johnson, MD | San Luis Obispo, CA | 54 |
| 3 | Theodore Affue, M.D. | El Centro, CA | 50 |
| 4 | Aytac Apaydin, MD | Salinas, CA | 36 |
| 5 | Thomas Minor, MD | Clovis, CA | 36 |
| 6 | Craig Canfield, M.D. | San Luis Obispo, CA | 32 |
| 7 | Kevin Shandera, M.D. | Rancho Mirage, CA | 27 |
| 8 | Samuel Lee, M.D. | Apple Valley, CA | 26 |
| 9 | Richard Long, M.D. | San Ramon, CA | 25 |
| 10 | Karan Singh, M.D. | Laguna Hills, CA | 24 |
34 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 ESWL — Shockwave Lithotripsy in California?
- 44 California providers billed Medicare for ESWL — Shockwave Lithotripsy (CPT 50590) 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.