Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Matthew M Brennan, D.M.D

Orthodontics and Dentofacial Orthopedics Dentistry in Warwick, RI · enumerated 2007 · practices at Brennan Orthodontics, Inc..

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

National Provider Identifier

1538348321

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Matthew M Brennan

Credential D.M.D

Sex Male

Practice address 1434 Warwick Ave, Warwick, RI, 02888

Phone (401) 463-6350

Enumeration date Oct 29, 2007

Last updated in NPPES Oct 29, 2007

Taxonomy & licenses

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License DEN2587 (RI) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier	Type	State	Issuer
139-741	Other	-	UNITED CONCORDIA
41-00012	Other	-	UNITED HEALTHCARE
8037-4	Other	-	BLUE CROSS
WB01101	Medicaid	RI	-
RG0069	Other	-	BLUE CROSS MASS

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Matthew Brennan practice?

The practice location on file with NPPES is in Warwick, RI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Matthew Brennan?

The National Provider Identifier (NPI) for Matthew Brennan is 1538348321, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Brennan Orthodontics, Inc. Orthodontics and Dentofacial Orthopedics Dentistry · Warwick, RI NPI 1336208511

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-29.