MENTAL HEALTH SYSTEMS, INC.
NPI 1720745169
Community/Behavioral Health in Fresno, CA

Active since November 19, 2021
2550 W CLINTON AVE UNIT 156, FRESNO, CA 93705(858) 573-2600 Get Directions Write a Review

NPPES record last updated: July 24, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 24, 2026, Nov 19, 2021 (2 updates tracked since 2021).

About Mental Health Systems, Inc. NPPES

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

MENTAL HEALTH SYSTEMS, INC. (NPI 1720745169) is a healthcare organization registered as a community/behavioral health in Fresno, California and active in the NPI registry since November 2021. The organization lists James C Callaghan, President/ceo, as its authorized official.

NPPES Registry Identity

NPI1720745169
Entity TypeOrganization
Primary Taxonomy251S00000X
Legal Business NameMENTAL HEALTH SYSTEMS, INC.
Location Address2550 W CLINTON AVE UNIT 156Fresno, CA 93705-4210
Mailing Address9465 Farnham StSan Diego, CA 92123-1308 · (858) 573-2600
Organization SubpartNo
Authorized OfficialJames C CallaghanPresident/ceo · (858) 573-2600
Enumeration DateNovember 19, 2021
Last NPPES UpdateJuly 24, 20262 updates tracked since enumeration
NPPES CertifiedJuly 24, 2026
✔ NPI 1720745169 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.
2550 W CLINTON AVE UNIT 156, Fresno, CA 93705

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, 4 practice at this address and 7 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 1649208638
2550 W CLINTON AVE BLDG A
Fresno, CA 93705
(559) 264-7521
✔ PECOS✔ Accepts MedicareSame address
Marriage and Family Therapist
NPI 1053449793
2550 W CLINTON AVE UNIT 116
Fresno, CA 93705
(559) 264-7521
✔ PECOS✔ Accepts MedicareSame address
Clinical Social Worker
NPI 1770607897
2550 W CLINTON AVE BLDG W & A
Fresno, CA 93705
(559) 264-7521
✔ PECOSSame address
Psychiatry
NPI 1578522462
2550 W CLINTON AVE BUILDING A SUITE 116
Fresno, CA 93705
(559) 264-7521
✔ PECOS✔ Accepts MedicareSame address
Psychiatry
NPI 1184039042
2549 W SHAW AVE
Fresno, CA 93711
(516) 304-6808
✔ PECOS✔ Accepts Medicare2.5 mi
Marriage and Family Therapist
NPI 1528629623
5588 N PALM AVE
Fresno, CA 93704
(860) 469-5439
✔ PECOS3.7 mi
Psychiatry
NPI 1588776918
7341 N 1ST ST STE 110
Fresno, CA 93720
(559) 860-9314
✔ PECOS✔ Accepts Medicare6.1 mi
Marriage and Family Therapist
NPI 1043931470
213 CENTER ST
Hanford, CA 93230
(559) 415-6737
✔ PECOS32 mi
Psychiatry
NPI 1629263512
1441 CONSTITUTION BLVD BLDG 400 202
Salinas, CA 93906
(831) 796-1700
✔ PECOS100 mi
Psychiatry
NPI 1568765493
10333 EL CAMINO REAL
Atascadero, CA 93422
(210) 861-2034
✔ PECOS101 mi
Psychiatry
NPI 1861470197
7224 S RECOVERY RD
French Camp, CA 95231
(209) 888-6595
✔ PECOS✔ Accepts Medicare111 mi
Psychiatry
NPI 1922395797
5131 PARKRIDGE DR
Oakland, CA 94619
(510) 531-0985
✔ PECOS145 mi
Nurse Practitioner
NPI 1255058624
453 SAN FRANCISCO AVE
Brisbane, CA 94005
(925) 497-0188
✔ PECOS✔ Accepts Medicare155 mi
Nurse Practitioner
NPI 1891162384
2309 NORIEGA ST STE 888
San Francisco, CA 94122
(843) 474-5578
✔ PECOS✔ Accepts Medicare161 mi
Clinical Social Worker
NPI 1306143441
1701 MISSION AVE STE 230
Oceanside, CA 92058
(760) 712-3535
✔ PECOS✔ Accepts Medicare283 mi
Mental Health Counselor
NPI 1548658909
1701 MISSION AVE STE 230
Oceanside, CA 92058
(760) 712-3535
✔ PECOS283 mi
Clinical Social Worker
NPI 1174286223
1300 RANCHO DEL ORO RD
Oceanside, CA 92056
(404) 317-1573
✔ PECOS285 mi
Mental Health Counselor
NPI 1518376821
550 W VISTA WAY STE 407
Vista, CA 92083
(760) 758-1092
✔ PECOS287 mi
Marriage and Family Therapist
NPI 1295235380
474 W VERMONT AVE
Escondido, CA 92025
(760) 480-2255
✔ PECOS✔ Accepts Medicare298 mi
Marriage and Family Therapist
NPI 1447555123
474 W VERMONT AVE
Escondido, CA 92025
(760) 480-2255
✔ PECOS298 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 1720745169. It was assigned to this organization in the NPPES registry on November 19, 2021.

Where is Mental Health Systems, Inc. located?

Mental Health Systems, Inc. is located at 2550 W Clinton Ave Unit 156, Fresno, CA 93705. 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, 4 practice at this address and 7 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 2 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.