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Mr. Herbert J Brennan, DO

Internal Medicine Physician in East Greenwich, RI · enumerated 2006.

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

National Provider Identifier

1659489060

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Registry record

Entity type Individual (Type 1)
Name Mr. Herbert J Brennan
Credential DO
Sex Male
Practice address 2358 South County Trail, East Greenwich, RI, 02818
Phone (401) 886-6000
Fax (401) 886-6002
Enumeration date Aug 26, 2006
Last updated in NPPES Sep 10, 2008

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License D000445 (RI) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
0000025578 Other RI BLUE CROSS
0400679 Other - UHC
401019 Other RI BLUE CHIP

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

What is the NPI number for Herbert Brennan?
The National Provider Identifier (NPI) for Herbert Brennan is 1659489060, a Type 1 (individual) record in the CMS NPPES registry.
Where does Herbert Brennan practice?
The practice location on file with NPPES is in East Greenwich, RI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-10.