Judith Mastick, RN,MN,FNP-C
NPI 1447490081 · Family Nurse Practitioner · San Francisco, CA
Judith Mastick, RN,MN,FNP-C is a Family Nurse Practitioner provider in San Francisco, CA (NPI 1447490081).
Provider details
- NPI number
- 1447490081
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RN,MN,FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- RN#334173, NP#5547 (CA)
Specialties & taxonomies
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
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2009-02-23
- Last updated
- 2009-02-23
Frequently asked questions
- What is Judith Mastick's NPI number?
- Judith Mastick's National Provider Identifier (NPI) is 1447490081, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Judith Mastick's specialty?
- Judith Mastick is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Judith Mastick located?
- Judith Mastick's practice location on file with NPPES is 2 Koret Way, San Francisco, CA 94143-0610.
- What is Judith Mastick's phone number?
- The practice phone number listed in the NPPES registry for Judith Mastick is (415) 476-5503.
- Is Judith Mastick's NPI active?
- Yes — Judith Mastick's NPI (1447490081) is active in the NPPES registry as of the last update on 2009-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.