TAM NGUYEN OD
NPI 1053891762
Optometrist in San Jose, CA
About Tam Nguyen Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TAM NGUYEN OD (NPI 1053891762) is an individual optometrist in San Jose, California, licensed in California (34110TLG) and active in the NPI registry since August 2018. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Tam Nguyen Od is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Tam Nguyen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Gatos, CA 95032
- Reassigned Medicare billing, California enrollment
- 3 clinicians in this Medicare group
Castro Valley, CA 94546
- Reassigned Medicare billing, California enrollment
- 12 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95117 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
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 Tam Nguyen's NPI number?
The NPI number for Tam Nguyen is 1053891762. It was assigned to this individual provider in the NPPES registry on August 21, 2018.
Where is Tam Nguyen located?
Tam Nguyen practices at 4155 Moorpark Ave Ste 21, San Jose, CA 95117. The listed phone number is (408) 243-2020.
What is Tam Nguyen's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Tam Nguyen enrolled in Medicare?
Yes. Tam Nguyen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Tam Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tam Nguyen reassigns Medicare benefits to 2 organizations: Yeh Optometry, A Professional Optometric Corporation (Los Gatos, CA) and For Your Eyes Only Ophthalmic Medical Corp. (Castro Valley, CA). Each 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 Tam Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tam Nguyen accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Providence Health Plan list Tam Nguyen 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 Tam Nguyen was last updated on September 20, 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.
# Tam Nguyen, OD · NPI 1053891762
Optometrist provider in San Jose, California. Individual provider, active in the CMS NPPES registry since August 21, 2018.
## Identity
- **NPI:** 1053891762 (Entity type: Individual)
- **Enumerated:** August 21, 2018
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 34110TLG (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4155 MOORPARK AVE STE 21, San Jose, CA 95117-1714
- **Phone:** (408) 243-2020
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Yeh Optometry, A Professional Optometric Corporation (NPI 1568970994, Los Gatos, CA); For Your Eyes Only Ophthalmic Medical Corp. (NPI 1861991234, Castro Valley, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 20, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1053891762) · Data from the CMS NPPES public registry.