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HERBERT J BRENNAN DO LTD
NPI 1184896722
Internal Medicine in East Greenwich, RI

Active since March 24, 2008
2358 S COUNTY TRL, EAST GREENWICH, RI 02818(401) 886-6000(401) 886-6002 Get Directions Write a Review

NPPES record last updated: September 3, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Herbert J Brennan Do Ltd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

HERBERT J BRENNAN DO LTD (NPI 1184896722) is a healthcare organization registered as an internal medicine in East Greenwich, Rhode Island and active in the NPI registry since March 2008. The organization lists Herbert J Brennan, President, as its authorized official.

NPPES Registry Identity

NPI1184896722
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameHERBERT J BRENNAN DO LTD
Location Address2358 S COUNTY TRLEast Greenwich, RI 02818-1500
Mailing Address2358 S County TrlEast Greenwich, RI 02818-1500 · (401) 886-6000 · Fax (401) 886-6002
Phone(401) 886-6000
Fax(401) 886-6002
Organization SubpartNo
Authorized OfficialHerbert J BrennanPresident · (401) 886-6000
Enumeration DateMarch 24, 2008
Last NPPES UpdateSeptember 3, 2008
✔ NPI 1184896722 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in RI · DO00445
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
2358 S COUNTY TRL, East Greenwich, RI 02818
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Other Identifiers 6

Other04-00679RI · United Health Care
Other401019RI · Blue Chip
Medicare PIN119006167RI
Medicare UPING22668RI
Medicaid9020286RI
Other0000025578RI · Ri Blue Shield

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Herbert J Brennan Do Ltd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Herbert J Brennan Do Ltd, which bills Medicare for the services this clinician delivers.

Clinician (1)

Herbert Brennan, DO
Internal Medicine
NPI 1659489060
2358 SOUTH COUNTY TRAIL
East Greenwich, RI 02818
(401) 886-6000
✔ PECOSSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Herbert J Brennan Do Ltd's NPI number?

The NPI number for Herbert J Brennan Do Ltd is 1184896722. It was assigned to this organization in the NPPES registry on March 24, 2008.

Where is Herbert J Brennan Do Ltd located?

Herbert J Brennan Do Ltd is located at 2358 S County Trl, East Greenwich, RI 02818. The listed phone number is (401) 886-6000.

What is Herbert J Brennan Do Ltd's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Herbert J Brennan Do Ltd enrolled in Medicare?

Yes. Herbert J Brennan Do Ltd is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Herbert J Brennan Do Ltd?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Herbert J Brennan Do Ltd. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Herbert J Brennan Do Ltd was last updated on September 3, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.