Nancy Mast, MFT
NPI 1013112515 · Marriage & Family Therapist · Santa Cruz, CA
Nancy Mast, MFT is a Marriage & Family Therapist provider in Santa Cruz, CA (NPI 1013112515).
Provider details
- NPI number
- 1013112515
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MFT
- Sex
- Female
- Sole proprietor
- No
- License
- 36494 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2007-06-15
- Last updated
- 2023-04-30
- Certified
- 2023-04-26
Frequently asked questions
- What is Nancy Mast's NPI number?
- Nancy Mast's National Provider Identifier (NPI) is 1013112515, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Mast's specialty?
- Nancy Mast is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Nancy Mast located?
- Nancy Mast's practice location on file with NPPES is 1400 Emeline Ave Bldg K, Santa Cruz, CA 95060-1976.
- What is Nancy Mast's phone number?
- The practice phone number listed in the NPPES registry for Nancy Mast is (831) 454-5087.
- Is Nancy Mast's NPI active?
- Yes — Nancy Mast's NPI (1013112515) is active in the NPPES registry as of the last update on 2023-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.