HEALTH SERVICE ALLIANCE
NPI 1205523958
Family Medicine in Upland, CA
About Health Service Alliance NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HEALTH SERVICE ALLIANCE (NPI 1205523958) is a healthcare organization registered as a family medicine in Upland, California and active in the NPI registry since April 2023. The organization lists Jeffrey J Cox, Cfo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 3
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Health Service Alliance is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
14Medicare enrollment records show 14 clinicians reassign Medicare billing to Health Service Alliance, which bills Medicare for the services they deliver. Of these, 6 practice within 10 miles. They are listed nearest first.
Clinicians by Medicare Specialty 6
Clinicians, nearest first (14)
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 Health Service Alliance's NPI number?
The NPI number for Health Service Alliance is 1205523958. It was assigned to this organization in the NPPES registry on April 21, 2023.
Where is Health Service Alliance located?
Health Service Alliance is located at 600 N Euclid Ave Ste 202, Upland, CA 91786. The listed phone number is (909) 281-5800.
What is Health Service Alliance's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Health Service Alliance enrolled in Medicare?
Yes. Health Service Alliance is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Health Service Alliance?
According to the CMS Revalidation Reassignment List (October 2026 release), 14 clinicians in 6 Medicare specialties reassign their Medicare billing to Health Service Alliance. 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 (6), Family Practice (3) and Internal Medicine (2). Of these, 6 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Health Service Alliance accept?
Health plans from Florida Blue (BlueCross BlueShield FL) and Florida Blue HMO (a BlueCross BlueShield FL company) list Health Service Alliance as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Health Service Alliance was last updated on September 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Health Service Alliance · NPI 1205523958
Family Medicine organization in Upland, California. Organization record, active in the CMS NPPES registry since April 21, 2023.
## Identity
- **NPI:** 1205523958 (Entity type: Organization)
- **Enumerated:** April 21, 2023
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **Organization subpart:** Yes (part of Health Service Alliance)
- **Authorized official:** Jeffrey Cox, CFO
## Practice location
- **Address:** 600 N EUCLID AVE STE 202, Upland, CA 91786-4779
- **Phone:** (909) 281-5800
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 14 clinicians in 6 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (6), Family Practice (3), Internal Medicine (2); 6 practice within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 9, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1205523958) · Data from the CMS NPPES public registry.