MENTAL HEALTH SYSTEMS, INC.
NPI 1760431670
Community/Behavioral Health in San Diego, CA

Active since May 08, 2006
9465 FARNHAM ST, SAN DIEGO, CA 92123(858) 573-2600(858) 573-2602 Get Directions Write a Review

NPPES record last updated: July 24, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 24, 2026, Feb 11, 2020, Jul 19, 2017 (3 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 1760431670) is a healthcare organization registered as a community/behavioral health in San Diego, California and active in the NPI registry since May 2006. The organization lists James C Callaghan, President & Ceo, as its authorized official.

NPPES Registry Identity

NPI1760431670
Entity TypeOrganization
Primary Taxonomy251S00000X
Legal Business NameMENTAL HEALTH SYSTEMS, INC.
Location Address9465 FARNHAM STSan Diego, CA 92123-1308
Mailing Address9465 Farnham StSan Diego, CA 92123-1308 · (858) 573-2600 · Fax (858) 573-2602
Fax(858) 573-2602
Organization SubpartNo
Authorized OfficialJames C CallaghanPresident & Ceo · (858) 573-2600
Enumeration DateMay 8, 2006
Last NPPES UpdateJuly 24, 20263 updates tracked since enumeration
NPPES CertifiedJuly 24, 2026
✔ NPI 1760431670 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.
9465 FARNHAM ST, San Diego, CA 92123

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mental Health Systems, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

72

Medicare enrollment records show 72 clinicians reassign Medicare billing to Mental Health Systems, Inc., which bills Medicare for the services they deliver. Of these, 24 practice within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 5

Nurse Practitioner27
Psychiatry26
Clinical Social Worker10
Marriage and Family Therapist6
Mental Health Counselor3

Nearest to this location (20)

See all 72
Psychiatry
NPI 1346700101
3020 CHILDRENS WAY # MC5018
San Diego, CA 92123
(858) 576-1700
✔ PECOS✔ Accepts Medicare2.8 mi
Psychiatry
NPI 1811915812
2810 CAMINO DEL RIO S STE 102
San Diego, CA 92108
(619) 299-4374
✔ PECOS✔ Accepts Medicare4.3 mi
Nurse Practitioner
NPI 1639647647
2810 CAMINO DEL RIO S STE 102
San Diego, CA 92108
(619) 299-1419
✔ PECOS4.3 mi
Nurse Practitioner
NPI 1235771932
2810 CAMINO DEL RIO S STE 102
San Diego, CA 92108
(619) 299-1419
✔ PECOS✔ Accepts Medicare4.3 mi
Nurse Practitioner
NPI 1902275068
5353 MISSION CENTER RD STE 224
San Diego, CA 92108
(619) 688-5855
✔ PECOS4.5 mi
Psychiatry
NPI 1013108869
5333 MISSION CENTER RD STE 105
San Diego, CA 92108
(619) 997-4510
✔ PECOS4.5 mi
Nurse Practitioner
NPI 1811588189
9888 CARROLL CENTRE RD STE 218
San Diego, CA 92126
(858) 935-9104
✔ PECOS✔ Accepts Medicare4.7 mi
Clinical Social Worker
NPI 1780246900
4283 EL CAJON BLVD STE 115
San Diego, CA 92105
(213) 241-3841
✔ PECOS✔ Accepts Medicare5.5 mi
Nurse Practitioner
NPI 1861886202
4283 EL CAJON BLVD
San Diego, CA 92105
(619) 521-1743
✔ PECOS✔ Accepts Medicare5.5 mi
Mental Health Counselor
NPI 1194466409
5555 RESERVOIR DR STE 204-A
San Diego, CA 92120
(619) 822-1800
✔ PECOS5.5 mi
Nurse Practitioner
NPI 1871174748
5555 RESERVOIR DR STE 204-A
San Diego, CA 92120
(619) 822-1800
✔ PECOS✔ Accepts Medicare5.5 mi
Psychiatry
NPI 1346591591
200 W ARBOR DR MAILBOX 8809
San Diego, CA 92103
(619) 233-8500
✔ PECOS✔ Accepts Medicare5.8 mi
Nurse Practitioner
NPI 1003166646
200 W ARBOR DR
San Diego, CA 92103
(800) 926-8273
✔ PECOS✔ Accepts Medicare5.8 mi
Nurse Practitioner
NPI 1538790605
140 ARBOR DR
San Diego, CA 92103
(858) 534-7792
✔ PECOS✔ Accepts Medicare5.8 mi
Psychiatry
NPI 1043415888
2630 1ST AVE
San Diego, CA 92103
(619) 234-2158
✔ PECOS✔ Accepts Medicare7.2 mi
Clinical Social Worker
NPI 1568941847
3491 KURTZ ST STE 150
San Diego, CA 92110
(619) 320-2404
✔ PECOS7.2 mi
Clinical Social Worker
NPI 1275915654
3340 KEMPER ST
San Diego, CA 92110
(760) 227-1418
✔ PECOS7.6 mi
Psychiatry
NPI 1740465541
8760 CUYAMACA ST STE 100
Santee, CA 92071
(619) 383-6868
✔ PECOS✔ Accepts Medicare8.2 mi
Clinical Social Worker
NPI 1497002042
402 W BROADWAY STE 1925
San Diego, CA 92101
(619) 930-9060
✔ PECOS8.3 mi
Marriage and Family Therapist
NPI 1063880722
10201 MISSION GORGE RD STE O
Santee, CA 92071
(619) 385-2719
✔ PECOS8.7 mi
See all 72 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 1760431670. It was assigned to this organization in the NPPES registry on May 8, 2006.

Where is Mental Health Systems, Inc. located?

Mental Health Systems, Inc. is located at 9465 Farnham St, San Diego, CA 92123. The listed phone number is (858) 573-2600.

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

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

Is Mental Health Systems, Inc. enrolled in Medicare?

Yes. Mental Health Systems, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mental Health Systems, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 72 clinicians in 5 Medicare specialties reassign their Medicare billing to Mental Health Systems, Inc.. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (27), Psychiatry (26) and Clinical Social Worker (10). Of these, 24 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 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.