Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mark I Jacobs, MD

Individual provider Cardiovascular Disease Physician · NPI 1487638409

Mark I Jacobs, MD is a Cardiovascular Disease (Cardiology) in Willimantic, Connecticut. Graduated from University of Connecticut School of Medicine in 1981, 45 years ago. Practices with Hartford Healthcare Medical Group Specialists PLLC, a 1,537-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in New Hampshire.

Years since qualifying
45
Trained at
University of Connecticut School of Medicine
Licensed in
NH
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

5 Founders St Ste 102
Willimantic, CT 06226-2050
Phone: (860) 456-2898
Show map & directions

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

Additional practice locations (1)

  • 9 Healthcare Dr Ste 105, Biddeford, ME 04005-9445 — (207) 282-3666

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 9159 (NH)

Record details

NPI number1487638409
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 2, 2005
Last updated in NPPESAugust 1, 2023
Certification dateAugust 1, 2023
Mailing addressPo Box 1147, Portsmouth, NH 03802-0127

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolUNIVERSITY OF CONNECTICUT SCHOOL OF MEDICINE
Graduated 1981 (45 years in practice)
Group practice Hartford Healthcare Medical Group Specialists Pllc — 1537 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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