Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MENTAL HEALTH SYSTEMS, INC.
NPI 1841813938
Community/Behavioral Health in Fresno, CA

Active since May 22, 2020
2549 W SHAW AVE, FRESNO, CA 93711(559) 264-7521 Get Directions Write a Review

NPPES record last updated: July 24, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 24, 2026, Apr 2, 2024, Jul 16, 2020 and 1 more (4 updates tracked since 2020).

About Mental Health Systems, Inc. NPPES

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

MENTAL HEALTH SYSTEMS, INC. (NPI 1841813938), doing business as D.a.r.t. West, is a healthcare organization registered as a community/behavioral health in Fresno, California and active in the NPI registry since May 2020. The organization lists James C Callaghan, President/ceo, as its authorized official.

NPPES Registry Identity

NPI1841813938
Entity TypeOrganization
Primary Taxonomy251S00000X
Legal Business NameMENTAL HEALTH SYSTEMS, INC.
Location Address2549 W SHAW AVEFresno, CA 93711-3308
Mailing Address9465 Farnham StSan Diego, CA 92123-1308
Organization SubpartNo
Authorized OfficialJames C CallaghanPresident/ceo · (858) 573-2600
Enumeration DateMay 22, 2020
Last NPPES UpdateJuly 24, 20264 updates tracked since enumeration
NPPES CertifiedJuly 24, 2026
NPI 1841813938 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyCommunity/Behavioral HealthAgencies
Taxonomy Code251S00000X
Definition
A private or public agency usually under local government jurisdiction, responsible for assuring the delivery of community based mental health, intellectual disabilities, substance abuse and/or behavioral health services to individuals with those disabilities. Services may range from companion care, respite, transportation, community integration, crisis intervention and stabilization, supported employment, day support, prevocational services, residential support, therapeutic and supportive consultation, environmental modifications, intensive in-home therapy and day treatment, in addition to traditional mental health and behavioral treatment.
2549 W SHAW AVE, Fresno, CA 93711

Other Names 1

Doing Business AsD.a.r.t. West

Patient Reviews User submitted

Reviews are submitted by site visitors and approved by a human moderator before publication.

Review by Shannon ***** March 12, 2025

5/5
This program and the entire staff are the most caring and kind people I've ever met. They literally save lives all day, every day. I am eternally grateful for all they do.
Provider 5/5 Office Staff 5/5
Visited this provider? Share your experience.

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.

Social Worker
2549 W SHAW AVE
FRESNO, CA 93711
Peer Specialist
2549 W SHAW AVE
FRESNO, CA 93711
Social Worker
2549 W SHAW AVE
FRESNO, CA 93711
Community Health Worker
2549 W SHAW AVE
FRESNO, CA 93711
Peer Specialist
2549 W SHAW AVE
FRESNO, CA 93711
Psychiatry & Neurology (Psychiatry)
2549 W SHAW AVE
FRESNO, CA 93711
Day Training/Habilitation Specialist
2549 W SHAW AVE
FRESNO, CA 93711
Marriage & Family Therapist
2549 W SHAW AVE
FRESNO, CA 93711

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 Mental Health Systems, Inc.'s NPI number?

The NPI number for Mental Health Systems, Inc. is 1841813938. It was assigned to this organization in the NPPES registry on May 22, 2020. The provider is doing business as D.A.R.T. West.

Where is Mental Health Systems, Inc. located?

Mental Health Systems, Inc. is located at 2549 W Shaw Ave, Fresno, CA 93711. The listed phone number is (559) 264-7521.

What is Mental Health Systems, Inc.'s specialty?

The primary specialty registered for this NPI is Community/Behavioral Health with taxonomy code 251S00000X.

When was this NPI record last updated?

The NPPES record for Mental Health Systems, Inc. was last updated on July 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 days 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.