Specialty · city directory
Internal Medicine in Groton, MA
Active Internal Medicine providers practising in Groton, Massachusetts. Profiles include the NPI number, taxonomy code, license state, and practice address.
8
providers indexed
Advertisement
Internal Medicine providers in Groton, MA
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1871570218 | Alfred Heinser | Individual | Internal Medicine Physician | Groton, MA |
| 1326037508 | Alla Sarkisyan | Individual | Internal Medicine Physician | Groton, MA |
| 1558348953 | Dorothy Christiansen | Individual | Rheumatology Physician | Groton, MA |
| 1144362740 | Groton Medical Associates, LLC | Organization | Internal Medicine Physician | Groton, MA |
| 1235368242 | Hilde Westvik | Individual | Internal Medicine Physician | Groton, MA |
| 1689716813 | John P. Katzenberg | Organization | Internal Medicine Physician | Groton, MA |
| 1194702555 | Thomas Goodman | Individual | Rheumatology Physician | Groton, MA |
| 1881683068 | Vandana Sahay | Individual | Internal Medicine Physician | Groton, MA |
Frequently asked questions
How many Internal Medicine providers are in Groton, MA?
The latest NPPES snapshot lists 8 active Internal Medicine providers with a practice address in Groton, Massachusetts.
How do I check a Internal Medicine provider's NPI in Groton?
Open a profile below to see the NPI number, taxonomy code, and practice address, then verify against the official NPPES registry: every profile links directly to the CMS record.
Source: CMS NPPES (public data). Snapshot 2026-07-13.