NPPES file of Aug 9, 2026

Tuyet Van Thi Nguyen, PA-C

Physician Assistant · Fremont, CA

Tuyet Van Thi Nguyen, PA-C is a physician assistant with a practice address in Fremont, California, and NPI 1679082531, issued on Sep 22, 2017. Check the license (California 20358, 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
1679082531
Name
Tuyet Van Thi Nguyen
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
20358 CA
Self-reported in NPPES; status is on the state search
Practice location
39350 Civic Center Dr, Fremont, CA 94538
Phone
(707) 386-2680
Enumerated
Sep 22, 2017
Record last updated
Oct 9, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20171129003223); accepts Medicare assignment
Medical or professional school
Duke University School Of Medicine, 2017
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 39350 Civic Center Dr

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

  1. Trinh Bui DuCounselor1164088746
  2. Maureen Gatt, PH.D.Clinical Psychologist1255531034
  3. Aldrin Geronga, F.N.P.Nurse Practitioner1285062257
  4. Lindsey HodosMental Health Counselor1205339835
  5. Rodney HonradaMarriage & Family Therapist1861297210
  6. Hannah JoharchiPsychologist1043866494

Verify Tuyet Van Thi 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 20358
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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69% fewer Medicare Part D claims than the average physician assistant in 2024

260 Medicare Part D claims for 154 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 53 claims were for opioids.

  1. Tuyet Nguyen260
  2. Specialty average830

Most prescribed

  1. Meloxicam47 claims
  2. Ciclopirox33 claims
  3. Diclofenac Sodium33 claims
  4. Gabapentin26 claims
  5. Oxycodone-Acetaminophen25 claims
  6. Hydrocodone-Acetaminophen24 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.

Bills Medicare through one group practice

  1. Mission Peak Orthopaedic Medical Group IncHayward, CA

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

Tuyet Van Thi Nguyen among 14,451 physician assistant records in California

Tuyet Van Thi Nguyen, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 47% of them.

  • NPI issued2017 · 47% of these records are older, 48% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2017 · median 2018 among the 7,214 with a school on file
  • Record last updated2019 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

78 physician assistant records list a practice address in Fremont

They are 78 of the 4,749 NPPES records with a practice address in Fremont, and 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Jia Afnan, PAFremont, CA 945381376763698
  2. Jeffrey Cooper, PA-CFremont, CA 945381639239205
  3. Karen Garn, P.A.Fremont, CA 945381538168067
  4. Tammi Groom, PA-CFremont, CA 945381952472151
  5. Keith Jeffrey, PA-CFremont, CA 945381164461745
  6. Kristi Larock, PAFremont, CA 945381255317350
  7. Meagan Nguyen, P.A.Fremont, CA 945381639181514
  8. Judith Pierre, MS, RD, CDEFremont, CA 945381932257490

Common questions

What is Tuyet Van Thi Nguyen, PA-C's NPI number?

Tuyet Van Thi Nguyen, PA-C's National Provider Identifier (NPI) is 1679082531, issued on Sep 22, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Tuyet Van Thi Nguyen, PA-C located?

The NPPES record lists a practice address at 39350 Civic Center Dr, Fremont, CA, 94538. Phone: (707) 386-2680. Providers update this record themselves, so call before visiting.

How can I verify Tuyet Van Thi Nguyen, PA-C's license?

NPPES lists California license number 20358, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Tuyet Van Thi Nguyen, PA-C prescribe under Medicare Part D?

In 2024, Tuyet Van Thi Nguyen, PA-C had 260 Medicare Part D claims for 154 beneficiaries; the average among physician assistant prescribers was 830. 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.