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Roy Johnson, PHD
NPI 1932448867 · Psychologist · Vacaville, CA
Roy Johnson, PHD is a Psychologist provider in Vacaville, CA (NPI 1932448867).
Provider details
- NPI number
- 1932448867
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- PSY17332 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(78/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
1600 California Dr.
Vacaville, CA 95656-2000
Phone: (707) 448-6841
Street-level locationGet directions
Mailing address
31 Elmview Way
Novato, CA 94949-7224
Registry dates
- Enumerated
- 2013-02-13
- Last updated
- 2013-02-13
Frequently asked questions
- What is Roy Johnson's NPI number?
- Roy Johnson's National Provider Identifier (NPI) is 1932448867, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roy Johnson's specialty?
- Roy Johnson is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Roy Johnson located?
- Roy Johnson's practice location on file with NPPES is 1600 California Dr., Vacaville, CA 95656-2000.
- What is Roy Johnson's phone number?
- The practice phone number listed in the NPPES registry for Roy Johnson is (707) 448-6841.
- Is Roy Johnson's NPI active?
- Yes — Roy Johnson's NPI (1932448867) is active in the NPPES registry as of the last update on 2013-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.