FIRST HEALTH CLINIC
NPI 1659520666
Point of Service in San Jose, CA
About First Health Clinic NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
FIRST HEALTH CLINIC (NPI 1659520666) is a healthcare organization registered as a point of service in San Jose, California and active in the NPI registry since September 2008. The organization lists Hai Kevin Nguyen, President/owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
First Health Clinic is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by November 30, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to First Health Clinic, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 First Health Clinic's NPI number?
The NPI number for First Health Clinic is 1659520666. It was assigned to this organization in the NPPES registry on September 15, 2008.
Where is First Health Clinic located?
First Health Clinic is located at 459 S Capitol Ave Ste 4, San Jose, CA 95127. The listed phone number is (408) 929-5505.
What is First Health Clinic's specialty?
The primary specialty registered for this NPI is Point of Service with taxonomy code 305S00000X.
Is First Health Clinic enrolled in Medicare?
Yes. First Health Clinic is registered in the Medicare PECOS enrollment system.
When is First Health Clinic's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through First Health Clinic?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to First Health Clinic. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for First Health Clinic was last updated on September 15, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# First Health Clinic · NPI 1659520666
Point of Service organization in San Jose, California. Organization record, active in the CMS NPPES registry since September 15, 2008.
## Identity
- **NPI:** 1659520666 (Entity type: Organization)
- **Enumerated:** September 15, 2008
- **Primary specialty:** Point of Service · taxonomy 305S00000X
- **Organization subpart:** No
- **Authorized official:** Hai Nguyen, PRESIDENT/OWNER
## Practice location
- **Address:** 459 S CAPITOL AVE STE 4, San Jose, CA 95127-3025
- **Phone:** (408) 929-5505 · **Fax:** (408) 929-5705
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** November 30, 2026 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 1 clinician (Family Practice) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 15, 2008
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Source: [NPI Profile](https://npiprofile.com/npi/1659520666) · Data from the CMS NPPES public registry.