Vivian Huyen Nguyen, PA-C
Physician Assistant · San Jose, CA
Vivian Huyen Nguyen, PA-C is a physician assistant with a practice address in San Jose, California, and NPI 1811583362, issued on Dec 18, 2020. Check the license (California PA59227, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Vivian Huyen Nguyen
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA59227 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1799 Hamilton Ave, San Jose, CA 95125
- Phone
- (888) 530-4415
- Enumerated
- Dec 18, 2020
- Record last updated
- Jul 20, 2026
- Fax
- (833) 449-4676
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
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Verify Vivian Huyen Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA59227Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average physician assistant in 2024
750 Medicare Part D claims for 200 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium57 claims
- Metformin Hcl48 claims
- Amlodipine Besylate35 claims
- Losartan Potassium35 claims
- Simvastatin30 claims
- Levothyroxine Sodium27 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.
Vivian Huyen Nguyen among 14,451 physician assistant records in California
Vivian Huyen 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 2020, is newer than 62% of them.
- NPI issued2020 · 62% of these records are older, 33% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2026 · 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).
221 physician assistant records list a practice address in San Jose
They are 221 of the 20,925 NPPES records with a practice address in San Jose, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in San Jose → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Charlotte Bohn, PA-CSan Jose, CA 951241205768553
- Maria Caicedo, PASan Jose, CA 951241659030732
- Ammar Chohan, PA-CSan Jose, CA 951241700526159
- Kellianne CraigSan Jose, CA 951261386041960
- Amanda Diep, PA-CSan Jose, CA 951241962065805
- Hayley DoSan Jose, CA 951261902455272
- Claire Hafter, PA-CSan Jose, CA 951241700523412
- Mara Hainor, PA-CSan Jose, CA 951261104146836
Common questions
What is Vivian Huyen Nguyen, PA-C's NPI number?
Vivian Huyen Nguyen, PA-C's National Provider Identifier (NPI) is 1811583362, issued on Dec 18, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Vivian Huyen Nguyen, PA-C located?
The NPPES record lists a practice address at 1799 Hamilton Ave, San Jose, CA, 95125. Phone: (888) 530-4415. Providers update this record themselves, so call before visiting.
How can I verify Vivian Huyen Nguyen, PA-C's license?
NPPES lists California license number PA59227, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Vivian Huyen Nguyen, PA-C prescribe under Medicare Part D?
In 2024, Vivian Huyen Nguyen, PA-C had 750 Medicare Part D claims for 200 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.