Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kaitlyn Patricia Brennan, NP-C

Family Nurse Practitioner in Concord, MA · enumerated 2013 · practices at Atrius Health, Inc..

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

National Provider Identifier

1609218072

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Registry record

Entity type Individual (Type 1)

Name Kaitlyn Patricia Brennan

Credential NP-C

Sex Female

Practice address 330 Baker Avenue, Concord, MA, 01742

Phone (978) 287-9300

Fax (978) 250-3989

Enumeration date Jul 25, 2013

Last updated in NPPES Nov 6, 2015

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2264159 (MA) Primary

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 Kaitlyn Brennan?

The National Provider Identifier (NPI) for Kaitlyn Brennan is 1609218072, a Type 1 (individual) record in the CMS NPPES registry.

Where does Kaitlyn Brennan practice?

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

Other providers at this practice address

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Atrius Health, Inc. Internal Medicine Physician · Concord, MA NPI 1265655799

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-11-06.