Tammy Mahaney, DNP-FNP
NPI 1679359178 · Family Nurse Practitioner · San Francisco, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Mahaney, DNP-FNP is a Family Nurse Practitioner provider in San Francisco, CA (NPI 1679359178).
Provider details
- NPI number
- 1679359178
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP-FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 95027799 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 400 30th St Ste 401Oakland, CA 94609-3317Phone: (510) 891-9998
Registry dates
- Enumerated
- 2023-08-31
- Last updated
- 2023-12-27
- Certified
- 2023-12-27
Frequently asked questions
- What is Tammy Mahaney's NPI number?
- Tammy Mahaney's National Provider Identifier (NPI) is 1679359178, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Mahaney's specialty?
- Tammy Mahaney is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tammy Mahaney located?
- Tammy Mahaney's practice location on file with NPPES is 2000 Van Ness Ave Ste 304, San Francisco, CA 94109-3020.
- What is Tammy Mahaney's phone number?
- The practice phone number listed in the NPPES registry for Tammy Mahaney is (415) 775-1500.
- Does Tammy Mahaney accept Medicare?
- Tammy Mahaney is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Mahaney's NPI active?
- Yes — Tammy Mahaney's NPI (1679359178) is active in the NPPES registry as of the last update on 2023-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.