Highest-Volume Cervical Fusion (ACDF) Surgeons in Washington (2026 update)
10 Washington providers billed Medicare for Cervical Fusion (ACDF) (CPT 22551) 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 | Ryan Halpin, M.D. | Olympia, WA | 28 |
| 2 | Abdulaziz Alali, MD, PHD | Seattle, WA | 27 |
| 3 | Melvin Wahl, MD | Richland, WA | 26 |
| 4 | Lee Sandquist, D.O. | Spokane Valley, WA | 22 |
| 5 | Daniel Lazar, MD | Seattle, WA | 18 |
| 6 | Hank Vejvoda, M.D. | Wenatchee, WA | 16 |
| 7 | Andrew Manista, MD | Olympia, WA | 16 |
| 8 | David Mourning, M.D. | Mount Vernon, WA | 16 |
| 9 | David Lundin, MD | Renton, WA | 14 |
| 10 | Christopher Howe, MD | Renton, WA | 12 |
Frequently asked questions
- How many surgeons perform Cervical Fusion (ACDF) in Washington?
- 10 Washington providers billed Medicare for Cervical Fusion (ACDF) (CPT 22551) 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.