Stephen Matthews
NPI 1124758594 · Psychologist · Northridge, CA
Stephen Matthews is a Psychologist provider in Northridge, CA (NPI 1124758594).
Provider details
- NPI number
- 1124758594
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Case Manager/Care Coordinator171M00000X
Other Service Providers
- Rehabilitation Practitioner225400000X
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
4 documented practice locations
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
Additional practice locations (3)
- 3406 Sierra Meadow CtElk Grove, CA 95758-4660Phone: (916) 529-2467
- 8950 Cal Center Dr Ste 340Sacramento, CA 95826-3225Phone: (916) 254-5200
- 3671 Business Dr Ste 110Sacramento, CA 95820-2233Phone: (916) 529-2467
Registry dates
- Enumerated
- 2022-06-16
- Last updated
- 2025-11-26
- Certified
- 2025-11-26
Frequently asked questions
- What is Stephen Matthews's NPI number?
- Stephen Matthews's National Provider Identifier (NPI) is 1124758594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Matthews's specialty?
- Stephen Matthews is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Stephen Matthews located?
- Stephen Matthews's practice location on file with NPPES is 9650 Zelzah Ave, Northridge, CA 91325-2003.
- What is Stephen Matthews's phone number?
- The practice phone number listed in the NPPES registry for Stephen Matthews is (818) 993-9311.
- Is Stephen Matthews's NPI active?
- Yes — Stephen Matthews's NPI (1124758594) is active in the NPPES registry as of the last update on 2025-11-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.