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Leonard J Brennan, Dmd, LLC

General Practice Dentistry in Portland, ME · enumerated 2007 · authorized official Leonard Brennan, Owner.

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

National Provider Identifier

1225151178

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Registry record

Entity type Organization (Type 2)
Legal business name Leonard J Brennan, Dmd, LLC
Practice address 1250 Congress St, Portland, ME, 04102
Phone (207) 773-2446
Fax (207) 773-4990
Enumeration date Apr 7, 2007
Last updated in NPPES Nov 5, 2007

Taxonomy & classification

1223G0001X General Practice Dentistry Dental Providers · License 2905 (ME) Primary

Authorized official

Name Leonard Brennan
Title Owner
Phone (207) 773-2446

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 a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Leonard J Brennan, Dmd, LLC?
Leonard J Brennan, Dmd, LLC is registered in NPPES as a General Practice Dentistry (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-05.