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

David Matthew Stein, MD

Individual provider Internal Medicine Physician · NPI 1245729656

David Matthew Stein, MD is an Internal Medicine in Westborough, Massachusetts. Graduated from University of Massachusetts Medical School in 2018, 8 years ago. Practices with Reliant Medical Group Inc, a 638-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
8
Trained at
University of Massachusetts Medical School
Licensed in
MA
In the registry since
2018
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

900 Union St
Westborough, MA 01581-5408
Phone: (508) 871-0700
Fax: (508) 616-4411
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 285771 (MA)

Record details

NPI number1245729656
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 2, 2018
Last updated in NPPESAugust 10, 2023
Certification dateAugust 10, 2023
Mailing address900 Union St, Westborough, MA 01581-5408

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 2018 (8 years in practice)
Group practice Reliant Medical Group Inc — 638 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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