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Eric N Diamond, M.D.

Internal Medicine Physician in Westwood, MA · enumerated 2006 · practices at Mass General Brigham Community Physicians Inc..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1285607861

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Registry record

Entity type Individual (Type 1)
Name Eric N Diamond
Credential M.D.
Sex Male
Practice address 100 Brigham Way, Westwood, MA, 02090
Phone (781) 471-2200
Enumeration date Feb 13, 2006
Last updated in NPPES Nov 5, 2018

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 54336 (MA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
3188507 Medicaid MA -
J05866 Other MA BLUE CROSS
PM476 Other MA HARVARD PILGRIM
054336 Other MA TUFTS

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Eric Diamond practice?
The practice location on file with NPPES is in Westwood, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Eric Diamond?
The National Provider Identifier (NPI) for Eric Diamond is 1285607861, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-05.