Gregory Masters, LCSW
NPI 1356434898 · Clinical Social Worker · Santa Ana, CA
Gregory Masters, LCSW is a Clinical Social Worker provider in Santa Ana, CA (NPI 1356434898).
Provider details
- NPI number
- 1356434898
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- LL13391 (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
- 2006-10-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Masters's NPI number?
- Gregory Masters's National Provider Identifier (NPI) is 1356434898, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Masters's specialty?
- Gregory Masters is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Gregory Masters located?
- Gregory Masters's practice location on file with NPPES is 405 W 5th St, Santa Ana, CA 92701-4519.
- What is Gregory Masters's phone number?
- The practice phone number listed in the NPPES registry for Gregory Masters is (714) 480-6778.
- Is Gregory Masters's NPI active?
- Yes — Gregory Masters's NPI (1356434898) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.