Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Audrey Michelle Brennan, FNP-C

Nurse Practitioner in Alton, IL · enumerated 2021.

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

National Provider Identifier

1679231690

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Registry record

Entity type Individual (Type 1)

Name Audrey Michelle Brennan

Credential FNP-C

Sex Female

Practice address 4 Memorial Dr Ste 230, Alton, IL, 62002

Phone (618) 465-8666

Enumeration date Dec 7, 2021

Last updated in NPPES Jun 12, 2024

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 2021048680 (MO) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 2021048680 (MO) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209025875 (IL) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Audrey Brennan?

The National Provider Identifier (NPI) for Audrey Brennan is 1679231690, a Type 1 (individual) record in the CMS NPPES registry.

Where does Audrey Brennan practice?

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

Other providers at this practice address

Browse all →

David Riedel Gastroenterology Physician · Alton, IL NPI 1073505004 Ajitesh Rai Neurology Physician · Alton, IL NPI 1205883097 Mohammad Sajed Neurology Physician · Alton, IL NPI 1396785127 Mark Klucka Family Medicine Physician · Alton, IL NPI 1801902432 Michael Liu Neurology Physician · Alton, IL NPI 1851402721 Christopher Aldridge Surgery Physician · Alton, IL NPI 1104026707 Wael Girgis Endocrinology, Diabetes & Metabolism Physician · Alton, IL NPI 1508053802 Tammy Vandermolen Family Nurse Practitioner · Alton, IL NPI 1588853741

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-12.