James Masteller
NPI 1023886066 · Marriage & Family Therapist · Santa Ana, CA
James Masteller is a Marriage & Family Therapist provider in Santa Ana, CA (NPI 1023886066).
Provider details
- NPI number
- 1023886066
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 23796 (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
2 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
- 2023-12-19
- Last updated
- 2023-12-19
- Certified
- 2023-12-19
Frequently asked questions
- What is James Masteller's NPI number?
- James Masteller's National Provider Identifier (NPI) is 1023886066, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Masteller's specialty?
- James Masteller is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is James Masteller located?
- James Masteller's practice location on file with NPPES is 1633 E 4th St Ste 120, Santa Ana, CA 92701-5143.
- What is James Masteller's phone number?
- The practice phone number listed in the NPPES registry for James Masteller is (714) 558-9266.
- Is James Masteller's NPI active?
- Yes — James Masteller's NPI (1023886066) is active in the NPPES registry as of the last update on 2023-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.