Mark Clayton, MFT INTERN
NPI 1902293871 · Marriage & Family Therapist · Brentwood, CA
Mark Clayton, MFT INTERN is a Marriage & Family Therapist provider in Brentwood, CA (NPI 1902293871).
Provider details
- NPI number
- 1902293871
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MFT INTERN
- Sex
- Male
- Sole proprietor
- Yes
- License
- 83167 (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
11 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
- 2015-04-18
- Last updated
- 2015-04-18
Frequently asked questions
- What is Mark Clayton's NPI number?
- Mark Clayton's National Provider Identifier (NPI) is 1902293871, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Clayton's specialty?
- Mark Clayton is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Mark Clayton located?
- Mark Clayton's practice location on file with NPPES is 8336 Brentwood Blvd, Brentwood, CA 94513-1113.
- What is Mark Clayton's phone number?
- The practice phone number listed in the NPPES registry for Mark Clayton is (925) 813-1931.
- Is Mark Clayton's NPI active?
- Yes — Mark Clayton's NPI (1902293871) is active in the NPPES registry as of the last update on 2015-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.