STEPHEN SIMONSON PSY.D.
NPI 1679828958
Psychologist in Elk Grove, CA

Active since July 23, 2012
8788 PIANO CIR, ELK GROVE, CA 95757(916) 538-2652 Get Directions Write a Review

NPPES record last updated: May 20, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Stephen Simonson Psy.d. NPPES

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

STEPHEN SIMONSON PSY.D. (NPI 1679828958) is an individual psychologist in Elk Grove, California, licensed in California (PSY28589) and active in the NPI registry since July 2012.

NPPES Registry Identity

NPI1679828958
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameSTEPHEN SIMONSONCredential: PSY.D.
Location Address8788 PIANO CIRElk Grove, CA 95757-5996
Mailing Address8788 Piano CirElk Grove, CA 95757-5996
Sole ProprietorYes
Enumeration DateJuly 23, 2012
Last NPPES UpdateMay 20, 2026
NPPES CertifiedMay 20, 2026
NPI 1679828958 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in CA · PSY28589
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.
8788 PIANO CIR, Elk Grove, CA 95757

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 Simonson's NPI number?

The NPI number for Stephen Simonson is 1679828958. It was assigned to this individual provider in the NPPES registry on July 23, 2012.

Where is Stephen Simonson located?

Stephen Simonson practices at 8788 Piano Cir, Elk Grove, CA 95757. The listed phone number is (916) 538-2652.

What is Stephen Simonson'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 Simonson was last updated on May 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.