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

Dr. Matthew Samuel Loewenstein, MD

Individual provider Gastroenterology Physician · NPI 1215904982

Dr. Matthew Samuel Loewenstein, MD is a Gastroenterology Physician in Cambridge, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2006.

Licensed in
MA
In the registry since
2006
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

300 Mt Auburn St Ste 507
Cambridge, MA 02238
Phone: (617) 876-5674
Fax: (617) 661-7640
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 35973 (MA)

Record details

NPI number1215904982
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 2, 2006
Last updated in NPPESJuly 13, 2026

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