VIVIAN THAO NGUYEN OD
NPI 1336944271
Optometrist in Arcadia, CA
About Vivian Thao Nguyen Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
VIVIAN THAO NGUYEN OD (NPI 1336944271) is an individual optometrist in Arcadia, California, licensed in California (35905) and active in the NPI registry since February 2025. She is enrolled in Medicare PECOS and maintains a secondary practice location in South Pasadena.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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)
Vivian Thao Nguyen Od is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Vivian Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
South Pasadena, CA 91030
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Justin Hu Od Incorporated
- 5 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 91006 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
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 Vivian Nguyen's NPI number?
The NPI number for Vivian Nguyen is 1336944271. It was assigned to this individual provider in the NPPES registry on February 14, 2025.
Where is Vivian Nguyen located?
Vivian Nguyen practices at 288 E Live Oak Ave Ste D, Arcadia, CA 91006. The listed phone number is (626) 446-3937.
What is Vivian Nguyen's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Vivian Nguyen enrolled in Medicare?
Yes. Vivian Nguyen is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Vivian Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Vivian Nguyen reassigns Medicare benefits to Justin Hu, O.D., Incorporated (South Pasadena, 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 Vivian Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Vivian Nguyen accept?
Health plans from 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 Vivian 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 Vivian Nguyen was last updated on February 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Vivian Thao Nguyen, OD · NPI 1336944271
Optometrist provider in Arcadia, California. Individual provider, active in the CMS NPPES registry since February 14, 2025.
## Identity
- **NPI:** 1336944271 (Entity type: Individual)
- **Enumerated:** February 14, 2025
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 35905 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 288 E LIVE OAK AVE STE D, Arcadia, CA 91006-5602
- **Phone:** (626) 446-3937
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Justin Hu, O.D., Incorporated (NPI 1508148941, South Pasadena, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 14, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1336944271) · Data from the CMS NPPES public registry.