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

Dr. Thomas Isaac, MD

Individual provider Internal Medicine Physician · NPI 1811939374

Dr. Thomas Isaac, MD is an Internal Medicine in Braintree, Massachusetts. Qualified in 2001, 25 years ago. Practices with Atrius Health Inc, a 1,205-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
25
Licensed in
MA
In the registry since
2006
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

111 Grossman Dr
Braintree, MA 02184-4997
Phone: (781) 849-2405
Fax: (781) 849-2238
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 223676 (MA)

Record details

NPI number1811939374
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 11, 2006
Last updated in NPPESMarch 7, 2021
Certification dateMarch 7, 2021
Mailing address111 Grossman Dr, Braintree, MA 02184-4997

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2001 (25 years in practice)
Group practice Atrius Health Inc — 1205 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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