ALYSSIA SIMPSON
NPI 1861998387
Social Worker - Clinical in Hayward, CA

Active since April 03, 2018

NPPES record last updated: February 26, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Alyssia Simpson NPPES

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

ALYSSIA SIMPSON (NPI 1861998387) is an individual clinical provider in Hayward, California, licensed in California (LCSW137216) and active in the NPI registry since April 2018.

NPPES Registry Identity

NPI1861998387
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameALYSSIA SIMPSON
Location Address1061 A STHayward, CA 94541-4105
Mailing Address1061 A StHayward, CA 94541-4105 · (510) 676-6980
Sole ProprietorYes
Enumeration DateApril 3, 2018
Last NPPES UpdateFebruary 26, 2026
NPPES CertifiedFebruary 26, 2026
NPI 1861998387 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License Licensed in CA · LCSW137216
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
1061 A ST, Hayward, CA 94541

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 13

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

Social Worker
1061 A ST
HAYWARD, CA 94541
Social Worker
1061 A ST
HAYWARD, CA 94541
Specialist
1061 A ST
HAYWARD, CA 94541
Social Worker
1061 A ST
HAYWARD, CA 94541
Case Manager/Care Coordinator
1061 A ST
HAYWARD, CA 94541
Social Worker
1061 A ST
HAYWARD, CA 94541
Counselor (Mental Health)
1061 A ST
HAYWARD, CA 94541
Community Health Worker
1061 A ST
HAYWARD, CA 94541

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 Alyssia Simpson's NPI number?

The NPI number for Alyssia Simpson is 1861998387. It was assigned to this individual provider in the NPPES registry on April 3, 2018.

Where is Alyssia Simpson located?

Alyssia Simpson practices at 1061 A St, Hayward, CA 94541. The listed phone number is (510) 676-6980.

What is Alyssia Simpson's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Alyssia Simpson was last updated on February 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.