Highest-Volume Lumbar Fusion — Posterior Surgeons in Rhode Island (2026 update)
7 Rhode Island providers billed Medicare for Lumbar Fusion — Posterior (CPT 22612) 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 | Alan Daniels, MD | East Providence, RI | 29 |
| 2 | John Czerwein, M.D. | Johnston, RI | 21 |
| 3 | Sumit Das, M.D. | Johnston, RI | 20 |
| 4 | Shyam Patel, MD | Providence, RI | 19 |
| 5 | Eren Kuris, MD | East Providence, RI | 16 |
| 6 | Dominic Kleinhenz, MD | East Providence, RI | 15 |
| 7 | Bassel Diebo, M.D. | East Providence, RI | 12 |
Frequently asked questions
- How many surgeons perform Lumbar Fusion — Posterior in Rhode Island?
- 7 Rhode Island providers billed Medicare for Lumbar Fusion — Posterior (CPT 22612) 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.