Highest-Volume SLT — Laser Trabeculoplasty Surgeons in California (2026 update)
272 California providers billed Medicare for SLT — Laser Trabeculoplasty (CPT 65855) 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 | Joel Barthelow, M.D. | Chico, CA | 476 |
| 2 | Sok Nam, M.D. | Los Angeles, CA | 398 |
| 3 | Keshav Narain, M.D. | San Jose, CA | 338 |
| 4 | Richard Weise, MD | Glendale, CA | 325 |
| 5 | Andrew Cho, M.D. | Los Angeles, CA | 316 |
| 6 | Vikas Chopra, M.D. | Arcadia, CA | 165 |
| 7 | Robert Weinreb, MD | San Diego, CA | 164 |
| 8 | Scott So, M.D. | San Francisco, CA | 161 |
| 9 | Houman Vosoghi, M.D. | Westlake Village, CA | 156 |
| 10 | Bao-Thu Nguyen, M.D. | Long Beach, CA | 155 |
262 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 SLT — Laser Trabeculoplasty in California?
- 272 California providers billed Medicare for SLT — Laser Trabeculoplasty (CPT 65855) 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.