Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Gail M Sullivan, MD

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1477550721

Gail M Sullivan, MD practises Geriatric Medicine in Farmington, Connecticut. Graduated from Yale University School of Medicine in 1977, 49 years ago. Practices with University of Connecticut Health Center, a 628-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
49
Trained at
Yale University School of Medicine
Licensed in
CT
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

263 Farmington Ave
Farmington, CT 06030-0001
Phone: (860) 679-8400
Fax: (860) 679-1867
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence 021426 (CT)

Record details

NPI number1477550721
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 1, 2005
Last updated in NPPESSeptember 26, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGERIATRIC MEDICINE
Also practisesINTERNAL MEDICINE
Medical schoolYALE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1977 (49 years in practice)
Group practice University Of Connecticut Health Center — 628 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients24
Services billed 85 a service is one billed item, such as a visit, a test or a procedure
Average patient age86

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at University of Connecticut Health Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 628 clinicians in the practice; 12 are shown here.

Other providers in Farmington