MARGARET CALLAHAN MD
NPI 1508098534
Internal Medicine - Medical Oncology in Farmington, CT

Active since August 09, 2009PECOS EnrolledAccepts Medicare Assignment
89.61/100
CMS Quality Rating
263 FARMINGTON AVE, FARMINGTON, CT 06030(860) 679-2100 Get Directions Write a Review

NPPES record last updated: January 16, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Margaret Callahan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARGARET CALLAHAN MD (NPI 1508098534) is an individual medical oncology provider in Farmington, Connecticut, licensed in Connecticut (075986) and active in the NPI registry since August 2009. She is enrolled in Medicare PECOS, maintains a secondary practice location in New York, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1508098534
Entity TypeIndividualFemale
Primary Taxonomy207RX0202X
Provider Legal NameMARGARET CALLAHANCredential: MD
Location Address263 FARMINGTON AVEFarmington, CT 06030
Mailing Address263 Farmington AveFarmington, CT 06030-8082 · (860) 679-2100
Sole ProprietorNo
Medical School CMSOtherGraduated 2007
Enumeration DateAugust 9, 2009
Last NPPES UpdateJanuary 16, 2024
NPPES CertifiedJanuary 16, 2024
NPI 1508098534 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
Licenses Licensed in CT · 075986 Licensed in NY · 251318-1
Definition
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.
263 FARMINGTON AVE, Farmington, CT 06030

Secondary Practice Location 1

Location 11275 York AveNew York, NY 10065-6007 · Phone (800) 585-4118

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Margaret Callahan Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9739313719
PECOS Enrollment IDI20240306001138
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06030 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$183.10 typical visit price
range $60.82 – $183.10
Typical copayment $45.77 (range $15.20 – $45.77)
Most-billed visit code 99205
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

89.61/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality81.89
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Pathology (Anatomic Pathology & Clinical Pathology)
263 FARMINGTON AVE, LABORATORY HBP GROUP
FARMINGTON, CT 06030
Neurological Surgery
263 FARMINGTON AVE
FARMINGTON, CT 06030
Dentist (Endodontics)
263 FARMINGTON AVE
FARMINGTON, CT 06030
Internal Medicine (Endocrinology, Diabetes & Metabolism)
263 FARMINGTON AVE
FARMINGTON, CT 06030
Surgery
263 FARMINGTON AVE
FARMINGTON, CT 06030
Psychiatry & Neurology (Psychiatry)
263 FARMINGTON AVE
FARMINGTON, CT 06030
Internal Medicine (Gastroenterology)
263 FARMINGTON AVE
FARMINGTON, CT 06030
Student in an Organized Health Care Education/Training Program
263 FARMINGTON AVE
FARMINGTON, CT 06030

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Margaret Callahan's NPI number?

The NPI number for Margaret Callahan is 1508098534. It was assigned to this individual provider in the NPPES registry on August 9, 2009.

Where is Margaret Callahan located?

Margaret Callahan practices at 263 Farmington Ave, Farmington, CT 06030. The listed phone number is (860) 679-2100.

What is Margaret Callahan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Margaret Callahan enrolled in Medicare?

Yes. Margaret Callahan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Margaret Callahan was last updated on January 16, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.