NPPES file of Aug 9, 2026

Thuy-Trang Nguyen, O.D.

Optometrist · Berkeley, CA

Thuy-Trang Nguyen, O.D. is an optometrist with a practice address in Berkeley, California, and NPI 1154949899, issued on Jul 9, 2020. Check the license (California 34550, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1154949899
Name
Thuy-Trang Nguyen
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
34550 CA
Self-reported in NPPES; status is on the state search
Practice location
230 Minor Hall, Berkeley, CA 94720
Phone
(510) 642-2020
Enumerated
Jul 9, 2020
Record last updated
Aug 7, 2026
Medicare enrollment
Enrolled (PECOS I20201130002105); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 230 Minor Hall

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Dennis Fong, O.D.Optometrist1629103247
  2. Celia Gong, ODOptometrist1619498656
  3. Mengli Han, O.D.Optometrist1861946576
  4. Linh LeOptometrist1427330885
  5. Ghazal Naseri, ODCorneal and Contact Management Optometrist1023662269
  6. Teresa Nguyen, ODOptometrist1538685342

Verify Thuy-Trang Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 34550
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

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84% fewer Medicare Part D claims than the average optometrist in 2024

43 Medicare Part D claims for 18 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 91% of claims.

  1. Thuy-Trang Nguyen43
  2. Specialty average277

Most prescribed

  1. Latanoprost15 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $51.00

1 payment: food and beverage; the largest payer was CooperVision Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Thuy-Trang Nguyen$51.00
  2. Specialty average$769.99

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupBellflower, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Thuy-Trang Nguyen among 8,308 optometrist records in California

Thuy-Trang Nguyen, O.D. is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 84% of them.

  • NPI issued2020 · 84% of these records are older, 14% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 43% of these records are
  • Graduated2020 · median 2008 among the 3,573 with a school on file
  • Record last updated2026 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

126 optometrist records list a practice address in Berkeley

They are 126 of the 4,898 NPPES records with a practice address in Berkeley, and 8,308 optometrist records in California.

The 8 optometrist records with the nearest ZIP codes

  1. Dennis Burger, O.D.Berkeley, CA 947201942357181
  2. Gunilla Haegerstrom-Portnoy, OD, PHDBerkeley, CA 947201053458745
  3. Kathryn Johnson, O.D.Berkeley, CA 947201578630141
  4. Billie Knight, O.D.Berkeley, CA 947201538222096
  5. Anne Moy, O.D.Berkeley, CA 947201184788713
  6. Edward Revelli, O.D.Berkeley, CA 947201144367830
  7. Nina Tran, O.D.Berkeley, CA 947201629082318
  8. Kathy Tran, O.D.Berkeley, CA 947201346355401

Common questions

What is Thuy-Trang Nguyen, O.D.'s NPI number?

Thuy-Trang Nguyen, O.D.'s National Provider Identifier (NPI) is 1154949899, issued on Jul 9, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Thuy-Trang Nguyen, O.D. located?

The NPPES record lists a practice address at 230 Minor Hall, Berkeley, CA, 94720. Phone: (510) 642-2020. Providers update this record themselves, so call before visiting.

How can I verify Thuy-Trang Nguyen, O.D.'s license?

NPPES lists California license number 34550, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Thuy-Trang Nguyen, O.D. prescribe under Medicare Part D?

In 2024, Thuy-Trang Nguyen, O.D. had 43 Medicare Part D claims for 18 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.