Diana Thao Nguyen
Physician Assistant · Arcadia, CA
Diana Thao Nguyen is a physician assistant with a practice address in Arcadia, California, and NPI 1295423564, issued on Apr 25, 2023. Check the license (California PA64463, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Diana Thao Nguyen
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA64463 CA
Self-reported in NPPES; status is on the state search - Practice location
- 289 W Huntington Dr Ste 204, Arcadia, CA 91007
- Phone
- (833) 287-3631
- Enumerated
- Apr 25, 2023
- Record last updated
- Jul 3, 2024
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 289 W Huntington Dr Ste 204
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Noaman Hanif, M.D.Family Medicine Physician1326368572
Verify Diana Thao 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 PA64463Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average physician assistant in 2024
280 Medicare Part D claims for 64 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium18 claims
- Metformin Hcl17 claims
- Amlodipine Besylate15 claims
- Diclofenac Sodium13 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: $110.97
1 payment: food and beverage; the largest payer was Lilly USA, LLC. 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.
Diana Thao Nguyen among 14,451 physician assistant records in California
Diana Thao Nguyen 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 2023, is newer than 80% of them.
- NPI issued2023 · 80% of these records are older, 13% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2024 · 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).
27 physician assistant records list a practice address in Arcadia
They are 27 of the 2,033 NPPES records with a practice address in Arcadia, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Arcadia → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Dana BoutrosArcadia, CA 910071134654965
- John Cary, PA-CArcadia, CA 910071821685942
- Giovanni DavidArcadia, CA 910071952012437
- Johanna De SilvaArcadia, CA 910071003495573
- Janel Encinas, P.A.Arcadia, CA 910071861436230
- Alex Fan, PA-CArcadia, CA 910071659086783
- Ginamarie Farino, PA-CArcadia, CA 910071326196635
- Helen La, P.A.C.Arcadia, CA 910071639113418
Common questions
What is Diana Thao Nguyen's NPI number?
Diana Thao Nguyen's National Provider Identifier (NPI) is 1295423564, issued on Apr 25, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Diana Thao Nguyen located?
The NPPES record lists a practice address at 289 W Huntington Dr Ste 204, Arcadia, CA, 91007. Phone: (833) 287-3631. Providers update this record themselves, so call before visiting.
How can I verify Diana Thao Nguyen's license?
NPPES lists California license number PA64463, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Diana Thao Nguyen prescribe under Medicare Part D?
In 2024, Diana Thao Nguyen had 280 Medicare Part D claims for 64 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.