Registry data as of Aug 27, 2026

Tammy Mahaney, DNP-FNP

Family Nurse Practitioner · San Francisco, CA

Tammy Mahaney, DNP-FNP is a family nurse practitioner with a practice address in San Francisco, California, and NPI 1679359178, issued on Aug 31, 2023. Check the license (California 95027799, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1679359178
Name
Tammy Mahaney
Credential
DNP-FNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
95027799 CA
Self-reported in NPPES; status is on the state search
Practice location
2000 Van Ness Ave Ste 304, San Francisco, CA 94109
Phone
(415) 775-1500
Enumerated
Aug 31, 2023
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2000 Van Ness Ave Ste 304

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Athena Kyle, P.T.Specialist1770708497
  2. Dolores Meehan, NPNurse Practitioner1023619442
  3. Victoria Schneider, M.D.Pediatrics Physician1487778460

Verify Tammy Mahaney in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 95027799
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

98% fewer Medicare Part D claims than the average family nurse practitioner in 2024

29 Medicare Part D claims, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. Tammy Mahaney29
  2. Specialty average1,305

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Bella Health And Wellness IncSan Francisco, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

662 family nurse practitioner records list a practice address in San Francisco

They are 662 of the 38,143 NPPES records with a practice address in San Francisco, and 16,966 family nurse practitioner records in California.

Other family nurse practitioner records in California

  1. Danielle Aaroe, FAMILY NURSE PRACTITOroville, CA1750767083
  2. Joshua AaronMission Hills, CA1477291805
  3. Orly Aaron, NPSan Francisco, CA1376912451
  4. Paris Gilbert Russ AaronSacramento, CA1871079111
  5. Tiffanne Aaronsen, FNPIndio, CA1568191807
  6. Alvin Joseph Abad, FNP-CSan Francisco, CA1154919306
  7. Frances Abad, FNPLos Angeles, CA1053504514
  8. Nnenna AbaezeLong Beach, CA1457820763
  9. Raymond Abagat, FNPTorrance, CA1306685821
  10. Ashley AbalCastaic, CA1740140698

Common questions

What is Tammy Mahaney, DNP-FNP's NPI number?

Tammy Mahaney, DNP-FNP's National Provider Identifier (NPI) is 1679359178, issued on Aug 31, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Tammy Mahaney, DNP-FNP located?

The NPPES record lists a practice address at 2000 Van Ness Ave Ste 304, San Francisco, CA, 94109. Phone: (415) 775-1500. Providers update this record themselves, so call before visiting.

How can I verify Tammy Mahaney, DNP-FNP's license?

NPPES lists California license number 95027799, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Tammy Mahaney, DNP-FNP prescribe under Medicare Part D?

In 2024, Tammy Mahaney, DNP-FNP had 29 Medicare Part D claims; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments, the HHS-OIG exclusion list) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.