Clayton Johnson, MA, PSY.D.
NPI 1952890840 · Clinical Social Worker · Chatsworth, CA
Clayton Johnson, MA, PSY.D. is a Clinical Social Worker provider in Chatsworth, CA (NPI 1952890840).
Provider details
- NPI number
- 1952890840
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MA, PSY.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Clinical Social Worker1041C0700X
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
8 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2018-05-07
- Last updated
- 2018-05-07
Frequently asked questions
- What is Clayton Johnson's NPI number?
- Clayton Johnson's National Provider Identifier (NPI) is 1952890840, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Clayton Johnson's specialty?
- Clayton Johnson is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Clayton Johnson located?
- Clayton Johnson's practice location on file with NPPES is 21000 Plummer St, Chatsworth, CA 91311-4903.
- What is Clayton Johnson's phone number?
- The practice phone number listed in the NPPES registry for Clayton Johnson is (818) 882-6400.
- Is Clayton Johnson's NPI active?
- Yes — Clayton Johnson's NPI (1952890840) is active in the NPPES registry as of the last update on 2018-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.