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Dr. Tammy J Mahaney, DNP-FNP

Family Nurse Practitioner in San Francisco, CA · enumerated 2023.

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

National Provider Identifier

1679359178

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Registry record

Entity type Individual (Type 1)
Name Dr. Tammy J Mahaney
Credential DNP-FNP
Sex Female
Practice address 2000 Van Ness Ave Ste 304, San Francisco, CA, 94109
Phone (415) 775-1500
Enumeration date Aug 31, 2023
Last updated in NPPES Dec 27, 2023

Taxonomy & licenses

363LW0102X Women's Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95027799 (CA) Secondary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95027799 (CA) 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

How do I verify Tammy Mahaney's NPI record?
Cross-check NPI 1679359178 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1679359178 active?
Yes, as of the latest NPPES snapshot, NPI 1679359178 is active (record last updated 2023-12-27).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-27.