Hai Nguyen, PA-C
Physician Assistant · Westminster, CA
Hai Nguyen, PA-C is a physician assistant with a practice address in Westminster, California, and NPI 1235411422, issued on Sep 13, 2011. Check the license (California PA 21659, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Hai Nguyen
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA 21659 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10301 Bolsa Ave, Westminster, CA 92683
- Phone
- (714) 418-9749
- Enumerated
- Sep 13, 2011
- Record last updated
- Sep 13, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (714) 418-1047
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 10301 Bolsa Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Nguyen, DCIndependent Medical Examiner Chiropractor1326294083
- David Pham, D.D.S., M.S.Orthodontics and Dentofacial Orthopedics Dentistry1790756245
- Tran Pham, DDSGeneral Practice Dentistry1851432447
- Joanna Vuong, D.M.D.Periodontics1609861483
Verify Hai 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 PA 21659Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average physician assistant in 2024
179 Medicare Part D claims for 59 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Estradiol28 claims
- Alendronate Sodium16 claims
- Progesterone15 claims
- Combipatch11 claims
- Fluconazole11 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: $429.68
20 payments; by number, the most common kind was food and beverage; the largest payer was Biogen, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Hai Nguyen among 14,451 physician assistant records in California
Hai 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 2011, is newer than 30% of them.
- NPI issued2011 · 30% of these records are older, 67% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2011 · 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).
30 physician assistant records list a practice address in Westminster
They are 30 of the 1,306 NPPES records with a practice address in Westminster, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Westminster → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Michele Barton, PAWestminster, CA 926831497906192
- Travis Comeau, DC, PA-CWestminster, CA 926831528587003
- Carlos Edwards, MDWestminster, CA 926831881752392
- Patricia Farnam, PA-CWestminster, CA 926831982914792
- Erica Finley Hickey, PAWestminster, CA 926831487699658
- Allison Hallinan, P.A.-CWestminster, CA 926831760521330
- Thu Nguyen, PA-CWestminster, CA 926831093006991
- Catherine Nguyen, PA-CWestminster, CA 926831326316076
Common questions
What is Hai Nguyen, PA-C's NPI number?
Hai Nguyen, PA-C's National Provider Identifier (NPI) is 1235411422, issued on Sep 13, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Hai Nguyen, PA-C located?
The NPPES record lists a practice address at 10301 Bolsa Ave, Westminster, CA, 92683. Phone: (714) 418-9749. Providers update this record themselves, so call before visiting.
How can I verify Hai Nguyen, PA-C's license?
NPPES lists California license number PA 21659, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Hai Nguyen, PA-C prescribe under Medicare Part D?
In 2024, Hai Nguyen, PA-C had 179 Medicare Part D claims for 59 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.