DR. TUONG-VY VIVIAN NGUYEN OD
NPI 1144063645
Optometrist in Berkeley, CA
About Dr. Tuong-vy Vivian Nguyen Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. TUONG-VY VIVIAN NGUYEN OD (NPI 1144063645) is an individual optometrist in Berkeley, California, licensed in California (35756) and active in the NPI registry since June 2024. She is enrolled in Medicare PECOS and is a graduate of University Of California - School Of Optometry (2024).
NPPES Registry Identity
Specialties & Licenses
Other Names 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 and accepts Medicare assignment
Dr. Tuong-vy Vivian Nguyen Od is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Tuong-vy Nguyen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Berkeley, CA 94720
- Reassigned Medicare billing, California enrollment
- 96 clinicians in this Medicare group
Fremont, CA 94538
- Reassigned Medicare billing, California enrollment
- 127 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 94720 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BERKELEY, CA 94720
BERKELEY, CA 94720
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 Tuong-vy Nguyen's NPI number?
The NPI number for Tuong-vy Nguyen is 1144063645. It was assigned to this individual provider in the NPPES registry on June 13, 2024. The provider is also known as Dr. Vivian Nguyen Od.
Where is Tuong-vy Nguyen located?
Tuong-vy Nguyen practices at 200 Minor Hall, Berkeley, CA 94720. The listed phone number is (510) 642-2020.
What is Tuong-vy Nguyen's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Tuong-vy Nguyen enrolled in Medicare?
Yes. Tuong-vy Nguyen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Tuong-vy Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tuong-vy Nguyen reassigns Medicare benefits to 2 organizations: Regents Of The University Of California At Berkeley (Berkeley, CA) and Bay Area Community Health (Fremont, 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 Tuong-vy Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tuong-vy Nguyen accept?
Health plans from Providence Health Plan list Tuong-vy 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 Tuong-vy Nguyen was last updated on June 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Tuong-Vy Vivian Nguyen, OD · NPI 1144063645
Optometrist provider in Berkeley, California. Individual provider, active in the CMS NPPES registry since June 13, 2024.
## Identity
- **NPI:** 1144063645 (Entity type: Individual)
- **Enumerated:** June 13, 2024
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 35756 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 MINOR HALL, Berkeley, CA 94720-0001
- **Phone:** (510) 642-2020 · **Fax:** (510) 642-8012
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California At Berkeley (NPI 1306908058, Berkeley, CA); Bay Area Community Health (NPI 1184791998, Fremont, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California - School Of Optometry, class of 2024
## Record status
- **NPPES last updated:** June 13, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1144063645) · Data from the CMS NPPES public registry.