Highest-Volume Lumbar Fusion — Combined (TLIF/PLIF) Surgeons in Michigan (2026 update)
33 Michigan providers billed Medicare for Lumbar Fusion — Combined (TLIF/PLIF) (CPT 22633) 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 | Michael Kremer, MD., PLC | Holland, MI | 49 |
| 2 | Timothy Spencer, DO | Battle Creek, MI | 36 |
| 3 | Azam Basheer, M.D. | Detroit, MI | 35 |
| 4 | Bradley Ahlgren, MD | Rochester Hills, MI | 31 |
| 5 | Jayant Jagannathan, MD | Troy, MI | 31 |
| 6 | Glenn Minster, M.D. | Wyandotte, MI | 29 |
| 7 | Boyd Richards, DO | Southfield, MI | 27 |
| 8 | Anthony Bozzio, M.D. | Muskegon, MI | 27 |
| 9 | Donald Seyfried, M.D. | Detroit, MI | 25 |
| 10 | Frank La Marca, MD | Ann Arbor, MI | 24 |
23 more Michigan 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 Lumbar Fusion — Combined (TLIF/PLIF) in Michigan?
- 33 Michigan providers billed Medicare for Lumbar Fusion — Combined (TLIF/PLIF) (CPT 22633) 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.