Highest-Volume Hip Fracture — Hemiarthroplasty/Fixation Surgeons in California (2026 update)
120 California providers billed Medicare for Hip Fracture — Hemiarthroplasty/Fixation (CPT 27236) 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 Kim-Orden, MD | Fountain Valley, CA | 48 |
| 2 | Christina Seifert, MD | Newport Beach, CA | 47 |
| 3 | Weiwei Wu, M.D. | Carmichael, CA | 35 |
| 4 | Jay Parkin, MD | Fairfield, CA | 34 |
| 5 | Aaron Osborne, DO | Redding, CA | 34 |
| 6 | Brian Kistler, M.D. | Santa Maria, CA | 31 |
| 7 | Frederick Penczak, MD | San Rafael, CA | 30 |
| 8 | Paul Gregory, M.D. | Carmichael, CA | 30 |
| 9 | Nathan Ehmer, D.O. | Redding, CA | 29 |
| 10 | George Tang, M.D. | Pasadena, CA | 29 |
110 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 Hip Fracture — Hemiarthroplasty/Fixation in California?
- 120 California providers billed Medicare for Hip Fracture — Hemiarthroplasty/Fixation (CPT 27236) 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.