Catherine Anh-Quyen Nguyen
Physician Assistant · West Covina, CA
Catherine Anh-Quyen Nguyen is a physician assistant with a practice address in West Covina, California, and NPI 1336665975, issued on Aug 16, 2017. Check the license (California PA54793, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Catherine Anh-Quyen Nguyen
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA54793 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1115 S Sunset Ave, West Covina, CA 91790
- Phone
- (626) 962-4011
- Enumerated
- Aug 16, 2017
- Record last updated
- Mar 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170927001896); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 1115 S Sunset Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dijla AlsaighStudent in an Organized Health Care Education/Training Program1700427259
- Reannen ArevaloEmergency Registered Nurse1902788334
- Cara Baker, MDAnesthesiology Physician1063660462
- Vincent BalitonEmergency Registered Nurse1578139408
- Noel Benedict Bautista, MDStudent in an Organized Health Care Education/Training Program1972436376
- Gilbert Benitez, PAEmergency Medicine Physician1184678245
Verify Catherine Anh-Quyen 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 PA54793Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average physician assistant in 2024
688 Medicare Part D claims for 515 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin-Clavulanate Potass94 claims
- Cephalexin68 claims
- Doxycycline Hyclate61 claims
- Azithromycin35 claims
- Nitrofurantoin Mono-Macro33 claims
- Paxlovid29 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $15.82
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
Bills Medicare through one group practice
- Hmts IncCosta Mesa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Anh-Quyen Nguyen among 14,451 physician assistant records in California
Catherine Anh-Quyen 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 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 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.
All 14,451 in California → Every provider in West Covina → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kimberly Amato, PACWest Covina, CA 917901477505014
- Patricia Breen-McDonoughWest Covina, CA 917901861484685
- Darrell Carter, P.A.West Covina, CA 917901407047756
- Ann Du, PACWest Covina, CA 917901841382314
- Patrick Duke, PA-CWest Covina, CA 917901619990447
- Diana Fernandez, P.A.West Covina, CA 917901235377367
- Amalia Galvez Tristan, PA-CWest Covina, CA 917901750566410
- Miriam Ha, P.A.West Covina, CA 917901013045558
Common questions
What is Catherine Anh-Quyen Nguyen's NPI number?
Catherine Anh-Quyen Nguyen's National Provider Identifier (NPI) is 1336665975, issued on Aug 16, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Anh-Quyen Nguyen located?
The NPPES record lists a practice address at 1115 S Sunset Ave, West Covina, CA, 91790. Phone: (626) 962-4011. Providers update this record themselves, so call before visiting.
How can I verify Catherine Anh-Quyen Nguyen's license?
NPPES lists California license number PA54793, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Catherine Anh-Quyen Nguyen prescribe under Medicare Part D?
In 2024, Catherine Anh-Quyen Nguyen had 688 Medicare Part D claims for 515 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Catherine Anh-Quyen Nguyen's MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.