1 NPI-registered providers practice in Watham, Massachusetts. Pick another city in the rail, or open the full search to filter by specialty and credential.
| Provider | Specialty | Location | NPI |
|---|---|---|---|
| Kathryn Masselam HatchM.D. | Ophthalmology Physician | Watham, MA | 1528265824 |
Source: CMS NPPES Data Dissemination (June 2026).
