STEPHEN DESHAWN MATTHEWS
NPI 1124758594
Psychologist in Northridge, CA

Active since June 16, 2022
9650 ZELZAH AVE, NORTHRIDGE, CA 91325(818) 993-9311 Get Directions Write a Review

NPPES record last updated: November 26, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Nov 26, 2025, Mar 12, 2025, Sep 26, 2024 and 1 more (4 updates tracked since 2024).

About Stephen Deshawn Matthews NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEPHEN DESHAWN MATTHEWS (NPI 1124758594) is an individual psychologist in Northridge, California and active in the NPI registry since June 2022. He maintains 3 additional practice locations.

NPPES Registry Identity

NPI1124758594
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameSTEPHEN DESHAWN MATTHEWS
Location Address9650 ZELZAH AVENorthridge, CA 91325-2003
Mailing Address3406 Sierra Meadow CtElk Grove, CA 95758-4660 · (916) 529-2467
Sole ProprietorNo
Enumeration DateJune 16, 2022
Last NPPES UpdateNovember 26, 20254 updates tracked since enumeration
NPPES CertifiedNovember 26, 2025
NPI 1124758594 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
Also ListedCase Manager/Care CoordinatorTaxonomy 171M00000X
Also ListedRehabilitation PractitionerTaxonomy 225400000X
9650 ZELZAH AVE, Northridge, CA 91325

Secondary Practice Locations 3

Location 18950 Cal Center Dr Ste 340Sacramento, CA 95826-3225 · Phone (916) 254-5200
Location 23671 Business Dr Ste 110Sacramento, CA 95820-2233 · Phone (916) 529-2467
Location 33406 Sierra Meadow CtElk Grove, CA 95758-4660 · Phone (916) 529-2467

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Rehabilitation Practitioner
9650 ZELZAH AVE
NORTHRIDGE, CA 91325
Rehabilitation Practitioner
9650 ZELZAH AVE
NORTHRIDGE, CA 91325
Rehabilitation Practitioner
9650 ZELZAH AVE
NORTHRIDGE, CA 91325
Social Worker (Clinical)
9650 ZELZAH AVE
NORTHRIDGE, CA 91325
Rehabilitation Practitioner
9650 ZELZAH AVE
NORTHRIDGE, CA 91325
Day Training/Habilitation Specialist
9650 ZELZAH AVE
NORTHRIDGE, CA 91325
Social Worker (Clinical)
9650 ZELZAH AVE
NORTHRIDGE, CA 91325
Marriage & Family Therapist
9650 ZELZAH AVE
NORTHRIDGE, CA 91325

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Stephen Matthews's NPI number?

The NPI number for Stephen Matthews is 1124758594. It was assigned to this individual provider in the NPPES registry on June 16, 2022.

Where is Stephen Matthews located?

Stephen Matthews practices at 9650 Zelzah Ave, Northridge, CA 91325. The listed phone number is (818) 993-9311.

What is Stephen Matthews's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

When was this NPI record last updated?

The NPPES record for Stephen Matthews was last updated on November 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.