1 NPI-registered Medical Microbiology Physician providers practice in Massachusetts. Switch states in the rail, or open the full search to filter by city and credential.
| Provider | Specialty | Location | NPI |
|---|---|---|---|
| Cathatl O'SullivanMD | Medical Microbiology Physician | Boston, MA | 1174632442 |
Source: CMS NPPES Data Dissemination (June 2026). Specialty taxonomy: NUCC.
