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

Robert J. Master, MD

Individual provider Internal Medicine Physician · NPI 1518048131

Robert J. Master, MD is an Internal Medicine 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.

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Practice location Address checks out

9A Forest St
Cambridge, MA 02140-1501
Phone: (617) 680-6892
Fax: (857) 678-4049
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 35355 (MA)

Record details

NPI number1518048131
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 18, 2006
Last updated in NPPESSeptember 17, 2024
Certification dateSeptember 17, 2024
Mailing address9a Forest St, Cambridge, MA 02140-1501

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