MENTAL HEALTH SYSTEMS, INC.
NPI 1740846542
Clinic/Center - Community Health in San Diego, CA
About Mental Health Systems, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MENTAL HEALTH SYSTEMS, INC. (NPI 1740846542), doing business as Alianza Wellness Center, is a healthcare organization registered as a community health in San Diego, California and active in the NPI registry since May 2019. The organization lists James C Callaghan, President/ceo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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
72Medicare enrollment records show 72 clinicians reassign Medicare billing to Mental Health Systems, Inc., which bills Medicare for the services they deliver. Of these, 2 practice at this address and 24 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 5
Nearest to this location (20)
See all 72Source: 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 1740846542. It was assigned to this organization in the NPPES registry on May 16, 2019. The provider is doing business as Alianza Wellness Center.
Where is Mental Health Systems, Inc. located?
Mental Health Systems, Inc. is located at 5555 Reservoir Dr Ste 204A, San Diego, CA 92120. The listed phone number is (858) 573-2600.
What is Mental Health Systems, Inc.'s specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Community Health, with taxonomy code 261QC1500X.
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, 2 practice at this address and 24 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.
# Mental Health Systems, Inc. · NPI 1740846542
Community Health organization in San Diego, California. Organization record, active in the CMS NPPES registry since May 16, 2019.
## Identity
- **NPI:** 1740846542 (Entity type: Organization)
- **Enumerated:** May 16, 2019
- **Primary specialty:** Clinic/Center - Community Health · taxonomy 261QC1500X
- **Also known as:** Alianza Wellness Center (Doing Business As)
- **Organization subpart:** No
- **Authorized official:** James Callaghan, PRESIDENT/CEO
## Practice location
- **Address:** 5555 RESERVOIR DR STE 204A, San Diego, CA 92120-5134
- **Phone:** (858) 573-2600
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 72 clinicians in 5 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (27), Psychiatry (26), Clinical Social Worker (10); 2 practice at this address and 24 within 10 miles; [full list](https://npiprofile.com/npi/1740846542/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 24, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1740846542) · Data from the CMS NPPES public registry.