NPPES file of Aug 9, 2026

Teresa Nguyen, PA-C

Physician Assistant · West Covina, CA

Teresa Nguyen, PA-C is a physician assistant with a practice address in West Covina, California, and NPI 1255097283, issued on Nov 15, 2021. Check the license 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
1255097283
Name
Teresa Nguyen
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
Practice location
1105 Highlight Dr, West Covina, CA 91791
Phone
(626) 423-4796
Enumerated
Nov 15, 2021
Record last updated
Nov 15, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20230816002308); 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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Verify Teresa Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
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2.1 times the Medicare Part D claims of the average physician assistant in 2024

1,768 Medicare Part D claims for 703 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.

  1. Teresa Nguyen1,768
  2. Specialty average830

Most prescribed

  1. Mupirocin328 claims
  2. Tacrolimus239 claims
  3. Triamcinolone Acetonide213 claims
  4. Ketoconazole154 claims
  5. Fluocinonide116 claims
  6. Cephalexin115 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: $4,599.20

138 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.

  1. Teresa Nguyen$4,599.20
  2. Specialty average$841.65

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. Tien Q Nguyen IncFountain Valley, CA

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

Teresa Nguyen among 14,451 physician assistant records in California

Teresa 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 2021, is newer than 67% of them.

  • NPI issued2021 · 67% of these records are older, 27% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2021 · median 2018 among the 7,214 with a school on file
  • Record last updated2021 · 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).

51 physician assistant records list a practice address in West Covina

They are 51 of the 2,450 NPPES records with a practice address in West Covina, and 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Jefferson Ang, PAWest Covina, CA 917911437047651
  2. Mitchell MarquezWest Covina, CA 917911831011642
  3. Joshua Bloch, PA-CWest Covina, CA 917901609628395
  4. Kennidy BrownWest Covina, CA 917921770403800
  5. Andrew Chu, PA-CWest Covina, CA 917901487483681
  6. Jandi DesinorWest Covina, CA 917901831868520
  7. Michael Gao, PA-CWest Covina, CA 917901609659879
  8. Lauren Gentile, PA-CWest Covina, CA 917901023894953

Common questions

What is Teresa Nguyen, PA-C's NPI number?

Teresa Nguyen, PA-C's National Provider Identifier (NPI) is 1255097283, issued on Nov 15, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Teresa Nguyen, PA-C located?

The NPPES record lists a practice address at 1105 Highlight Dr, West Covina, CA, 91791. Phone: (626) 423-4796. Providers update this record themselves, so call before visiting.

How can I verify Teresa Nguyen, PA-C's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Teresa Nguyen, PA-C prescribe under Medicare Part D?

In 2024, Teresa Nguyen, PA-C had 1,768 Medicare Part D claims for 703 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.