DR. HAI KEVIN NGUYEN MD
NPI 1619022431
Specialist in San Jose, CA
About Dr. Hai Kevin Nguyen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HAI KEVIN NGUYEN MD (NPI 1619022431) is an individual specialist in San Jose, California, licensed in California (A88085) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Hai Kevin Nguyen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Hai Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Jose, CA 95127
- Reassigned Medicare billing, California enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Hai Nguyen's NPI number?
The NPI number for Hai Nguyen is 1619022431. It was assigned to this individual provider in the NPPES registry on January 24, 2007.
Where is Hai Nguyen located?
Hai Nguyen practices at 459 S Capitol Ave Ste 4, San Jose, CA 95127. The listed phone number is (408) 929-5505.
What is Hai Nguyen's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Hai Nguyen enrolled in Medicare?
Yes. Hai Nguyen is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Hai Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hai Nguyen reassigns Medicare benefits to First Health Clinic (San Jose, CA). The 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 Hai Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Hai Nguyen was last updated on January 10, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Dr. Hai Kevin Nguyen, MD · NPI 1619022431
Specialist provider in San Jose, California. Individual provider, active in the CMS NPPES registry since January 24, 2007.
## Identity
- **NPI:** 1619022431 (Entity type: Individual)
- **Enumerated:** January 24, 2007
- **Primary specialty:** Specialist · taxonomy 174400000X
- **State license:** A88085 (California)
- **Sole proprietor:** Yes
## 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)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** First Health Clinic (NPI 1659520666, San Jose, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** January 10, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1619022431) · Data from the CMS NPPES public registry.