Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Herbert J Brennan Do Ltd

Internal Medicine Physician in East Greenwich, RI · enumerated 2008 · authorized official Herbert Brennan, President.

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

National Provider Identifier

1184896722

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Registry record

Entity type Organization (Type 2)

Legal business name Herbert J Brennan Do Ltd

Practice address 2358 S County Trl, East Greenwich, RI, 02818

Phone (401) 886-6000

Fax (401) 886-6002

Enumeration date Mar 24, 2008

Last updated in NPPES Sep 3, 2008

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License DO00445 (RI) Primary

Authorized official

Name Herbert Brennan

Title President

Phone (401) 886-6000

Other identifiers

Identifier	Type	State	Issuer
0000025578	Other	RI	RI BLUE SHIELD
401019	Other	RI	BLUE CHIP
9020286	Medicaid	RI	-
04-00679	Other	RI	UNITED HEALTH CARE

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 is Herbert J Brennan Do Ltd located?

The practice location on file with NPPES is in East Greenwich, RI.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-09-03. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-03.