National Provider Identifier Database

MARGARET CALLAHAN, MD – NPI #1508098534
Medical Oncology

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.


Contact Information

MARGARET CALLAHAN, MD
263 FARMINGTON AVE
FARMINGTON, CT06030
Phone: 860-679-2100
Fax:
Website:
Specialty Taxonomy Code
* Medical Oncology 207RX0202X

* Indicates primary specialty

NPI Profile & details for MARGARET CALLAHAN

NPI Number 1508098534
Credentials MD
Entity Individual
Enumeration date 08/09/2009
Last updated 01/16/2024 - About 2 years ago
Sole proprietor1 No
Identifiers
  • CT License #: 075986
  • NY License #: 251318-1
Hospital affiliation n/a

1 A sole proprietor/sole proprietorship is an individual, and as such, is eligible for a single NPI number. The sole proprietor must apply for the NPI number using his or her own Social Security Number (SSN), not an Employer Identification Number (EIN) even if he/she has an EIN.

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