Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MENTAL HEALTH SYSTEMS, INC.
NPI 1821130881
Community/Behavioral Health in San Diego, CA

Q: What is Mental Health Systems, Inc.'s NPI number?

The NPI number for Mental Health Systems, Inc. is 1821130881. It was assigned to this organization in the NPPES registry on February 13, 2007.

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

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

Active since February 13, 2007

4283 EL CAJON BLVD, STE. 115, SAN DIEGO, CA 92105(619) 521-1743(619) 521-1896 Get Directions Write a Review

NPPES record last updated: July 24, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 24, 2026, Aug 27, 2020, Aug 10, 2017 and 1 more (4 updates tracked since 2017).

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About Mental Health Systems, Inc. NPPES

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

MENTAL HEALTH SYSTEMS, INC. (NPI 1821130881) is a healthcare organization registered as a community/behavioral health in San Diego, California and active in the NPI registry since February 2007. The organization lists James C Callaghan, President/ceo, as its authorized official.

NPPES Registry Identity

NPI1821130881

Entity TypeOrganization

Primary Taxonomy251S00000X

Legal Business NameMENTAL HEALTH SYSTEMS, INC.

Location Address4283 EL CAJON BLVD, STE. 115San Diego, CA 92105-1289

Mailing Address9465 Farnham StreetSan Diego, CA 92123 · (858) 573-2600

Phone(619) 521-1743

Fax(619) 521-1896

Organization SubpartNo

Authorized OfficialJames C CallaghanPresident/ceo · (858) 573-2600

Enumeration DateFebruary 13, 2007

Last NPPES UpdateJuly 24, 20264 updates tracked since enumeration

NPPES CertifiedJuly 24, 2026

✔ NPI 1821130881 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.

4283 EL CAJON BLVD, San Diego, CA 92105

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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.

NANCY HOGUE

Marriage & Family Therapist

4283 EL CAJON BLVD
SAN DIEGO, CA 92105

San Diego County (619) 521-1743

SUZANNE YOUNG TAYLOR PCI, MA

Counselor

4283 EL CAJON BLVD, SUITE 115
SAN DIEGO, CA 92105

San Diego County (619) 521-1743

CHRISTINE MARIE GARCIA

Case Manager/Care Coordinator

4283 EL CAJON BLVD, STE. 115
SAN DIEGO, CA 92105

San Diego County (619) 521-1743

MR. JOSHUA CHARLES PELFREY MSW

Social Worker

4283 EL CAJON BLVD
SAN DIEGO, CA 92105

San Diego County (619) 219-1580

SAN DIEGO STATE UNIVERSITY - HEALTHY EARLY YEARS CLINIC

Counselor

4283 EL CAJON BLVD, SUITE 200
SAN DIEGO, CA 92105

San Diego County (619) 530-0122

CECILIA RENEE VILLEGAS

Social Worker (Clinical)

4283 EL CAJON BLVD
SAN DIEGO, CA 92105

San Diego County (619) 521-1743

NISA GENCEL

Counselor (Mental Health)

4283 EL CAJON BLVD, SUITE 200
SAN DIEGO, CA 92105

San Diego County (619) 371-5420

ADRIANNA RAMIREZ

Specialist

4283 EL CAJON BLVD, SUITE 115
SAN DIEGO, CA 92105

San Diego County (619) 521-1743

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 1821130881. It was assigned to this organization in the NPPES registry on February 13, 2007.

Where is Mental Health Systems, Inc. located?

Mental Health Systems, Inc. is located at 4283 El Cajon Blvd Ste. 115, San Diego, CA 92105. The listed phone number is (619) 521-1743.

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 30 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.