IndividualActive
Stephanie Johnson, PSYD
NPI 1639531965 · Psychologist · Upland, CA
Stephanie Johnson, PSYD is a Psychologist provider in Upland, CA (NPI 1639531965).
Provider details
- NPI number
- 1639531965
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Female
- Sole proprietor
- No
- License
- 30152 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(72/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
222 N Mountain Ave Ste 110b
Upland, CA 91786-5714
Phone: (909) 999-5220
Fax: (909) 781-2422
Street-level locationGet directions
Mailing address
222 N Mountain Ave Ste 110b
Upland, CA 91786-5714
Registry dates
- Enumerated
- 2016-03-25
- Last updated
- 2021-09-10
- Certified
- 2021-09-10
Frequently asked questions
- What is Stephanie Johnson's NPI number?
- Stephanie Johnson's National Provider Identifier (NPI) is 1639531965, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Johnson's specialty?
- Stephanie Johnson is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Stephanie Johnson located?
- Stephanie Johnson's practice location on file with NPPES is 222 N Mountain Ave Ste 110b, Upland, CA 91786-5714.
- What is Stephanie Johnson's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Johnson is (909) 999-5220.
- Is Stephanie Johnson's NPI active?
- Yes — Stephanie Johnson's NPI (1639531965) is active in the NPPES registry as of the last update on 2021-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.