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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 1639343544
Community/Behavioral Health in Fallbrook, CA

Active since April 22, 2008
591 E ELDER ST STE C, FALLBROOK, CA 92028(760) 451-4720(760) 451-4700 Get Directions Write a Review

NPPES record last updated: July 24, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 24, 2026, Aug 27, 2020, Oct 9, 2019 and 2 more (5 updates tracked since 2017).

About Mental Health Systems, Inc. NPPES

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

MENTAL HEALTH SYSTEMS, INC. (NPI 1639343544), doing business as Bpsr Fallbrook Clinic, is a healthcare organization registered as a community/behavioral health in Fallbrook, California and active in the NPI registry since April 2008. The organization lists James C Callaghan, President/ceo, as its authorized official.

NPPES Registry Identity

NPI1639343544
Entity TypeOrganization
Primary Taxonomy251S00000X
Legal Business NameMENTAL HEALTH SYSTEMS, INC.
Location Address591 E ELDER ST STE CFallbrook, CA 92028-5001
Mailing Address9465 Farnham StSan Diego, CA 92123-1308 · (858) 573-2600
Phone(760) 451-4720
Fax(760) 451-4700
Organization SubpartNo
Authorized OfficialJames C CallaghanPresident/ceo · (858) 573-2600
Enumeration DateApril 22, 2008
Last NPPES UpdateJuly 24, 20265 updates tracked since enumeration
NPPES CertifiedJuly 24, 2026
✔ NPI 1639343544 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.
591 E ELDER ST STE C, Fallbrook, CA 92028
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Other Names 2

Doing Business AsBpsr Fallbrook Clinic
Doing Business AsFallbrook Behavioral Health Clinic

Other Providers at the Same Location NPPES

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

MRS. ELAINE MARIE HUBBARD RDHAP
Dental Hygienist
591 E ELDER ST STE C
FALLBROOK, CA 92028
San Diego County (858) 232-2151

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 1639343544. It was assigned to this organization in the NPPES registry on April 22, 2008. The provider is doing business as BPSR Fallbrook Clinic and Fallbrook Behavioral Health Clinic.

Where is Mental Health Systems, Inc. located?

Mental Health Systems, Inc. is located at 591 E Elder St Ste C, Fallbrook, CA 92028. The listed phone number is (760) 451-4720.

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 10 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.