ANZA INDIAN HEALTH
NPI 1659424885
Clinic/Center - Federally Qualified Health Center (FQHC) in Anza, CA
About Anza Indian Health NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANZA INDIAN HEALTH (NPI 1659424885) is a healthcare organization registered as a federally qualified health center (fqhc) in Anza, California and active in the NPI registry since January 2007. The organization lists William Thomsen, 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)
Anza Indian Health is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
100Medicare enrollment records show 100 clinicians reassign Medicare billing to Anza Indian Health, which bills Medicare for the services they deliver. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 14
Nearest to this location (20)
See all 100Rancho Mirage, CA 92270
Banning, CA 92220
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 Riverside-San Bernardino County Indian Health, Inc.'s NPI number?
The NPI number for Riverside-San Bernardino County Indian Health, Inc. is 1659424885. It was assigned to this organization in the NPPES registry on January 19, 2007. The provider is doing business as Anza Indian Health.
Where is Riverside-San Bernardino County Indian Health, Inc. located?
Riverside-San Bernardino County Indian Health, Inc. is located at 39100 Contreras Rd Suite C, Anza, CA 92539. The listed phone number is (951) 763-4835.
What is Riverside-San Bernardino County Indian Health, Inc.'s specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Federally Qualified Health Center (FQHC), with taxonomy code 261QF0400X.
Is Riverside-San Bernardino County Indian Health, Inc. enrolled in Medicare?
Yes. Riverside-San Bernardino County Indian Health, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Riverside-San Bernardino County Indian Health, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 100 clinicians in 14 Medicare specialties reassign their Medicare billing to Riverside-San Bernardino County Indian Health, 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 (32), Family Practice (20) and Optometry (13). Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Riverside-San Bernardino County Indian Health, Inc. was last updated on August 25, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.
# Anza Indian Health · NPI 1659424885
Federally Qualified Health Center (FQHC) organization in Anza, California. Organization record, active in the CMS NPPES registry since January 19, 2007.
## Identity
- **NPI:** 1659424885 (Entity type: Organization)
- **Enumerated:** January 19, 2007
- **Primary specialty:** Clinic/Center - Federally Qualified Health Center (FQHC) · taxonomy 261QF0400X
- **Legal business name:** Riverside-San Bernardino County Indian Health, Inc.
- **Organization subpart:** No
- **Authorized official:** William Thomsen, CEO
## Practice location
- **Address:** 39100 CONTRERAS RD, SUITE C, Anza, CA 92539-8724
- **Phone:** (951) 763-4835 · **Fax:** (951) 763-0495
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 100 clinicians in 14 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (32), Family Practice (20), Optometry (13); [full list](https://npiprofile.com/npi/1659424885/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 25, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1659424885) · Data from the CMS NPPES public registry.