Highest-Volume Partial Knee Replacement Surgeons in New Hampshire (2026 update)
4 New Hampshire providers billed Medicare for Partial Knee Replacement (CPT 27446) 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 | Akhilesh Sastry, MD | Portsmouth, NH | 51 |
| 2 | Tyler Welch, MD | Portsmouth, NH | 18 |
| 3 | Michael Morwood, MD | Portsmouth, NH | 14 |
| 4 | Ira Parsons, MD | Somersworth, NH | 11 |
Frequently asked questions
- How many surgeons perform Partial Knee Replacement in New Hampshire?
- 4 New Hampshire providers billed Medicare for Partial Knee Replacement (CPT 27446) 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.