Internal Medicine, Medical Oncology
MARGARET CALLAHAN MD
Identity confirmed via CMS NPPES · September 30, 2026 · A directory match is not a coverage approval.
Is this your practice? This listing was imported from public provider identity data (CMS NPPES) and has not yet been claimed. Claim this listing to confirm the practice details. Plan acceptance stays unpublished until the practice reports it.
Public record
NPI 1508098534 · enumerated 2009-08-09 · record updated 2024-01-16. Source: CMS NPPES. A listing is not a TRICARE network approval.
NPPES recordGoogle Maps Apple Maps OpenStreetMap
Addresses and phones
- Mailing address 263 FARMINGTON AVE, FARMINGTON, CT, 06030-8082 (860) 679-2100 Google Maps Apple Maps OpenStreetMap
- Practice location 263 FARMINGTON AVE, FARMINGTON, CT, 06030 (860) 679-2100 Google Maps Apple Maps OpenStreetMap
Specialties
- Internal Medicine, Medical Oncology 207RX0202X · Primary · License 075986 CT
- Internal Medicine, Medical Oncology 207RX0202X · License 251318-1 NY
Locations and evidence
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Practice location
FARMINGTON, CT, 06030
Accepting new patientsNot reportedCMS NPPES · September 30, 2026
Plan acceptance
- No published plan acceptance yet. Confirm directly with the practice, or claim this listing if it's yours.