NPPES file of Aug 9, 2026

Amy Lynn Choy

Physician Assistant · Hercules, CA

Amy Lynn Choy is a physician assistant with a practice address in Hercules, California, and NPI 1063822187, issued on Apr 28, 2014. Check the license (California PA52955, as entered in NPPES) 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
1063822187
Name
Amy Lynn Choy
Primary taxonomy
Physician Assistant 363A00000X
License number
PA52955 CA
Self-reported in NPPES; status is on the state search
Practice location
600 Alfred Nobel Dr Ste A, Hercules, CA 94547
Phone
(510) 984-1111
Enumerated
Apr 28, 2014
Record last updated
Sep 21, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(707) 255-3527
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 600 Alfred Nobel Dr Ste A

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Boris Brand, NPCritical Care Medicine (Internal Medicine) Physician1710282629
  2. Leocarlo De CastroNurse Practitioner1396434874
  3. Calvin Ly, DOEmergency Medicine Physician1376761767
  4. Ogochukwu Nwosu, DNP, FNP-BC,PMHNP-BCFamily Nurse Practitioner1265994818
  5. Daniel Tsegay, DNP, FNP-BCFamily Nurse Practitioner1306344825

Verify Amy Lynn Choy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PA52955
    Check 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
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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93% fewer Medicare Part D claims than the average physician assistant in 2024

56 Medicare Part D claims, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.

  1. Amy Choy56
  2. Specialty average830

Most prescribed

  1. Gabapentin13 claims
  2. Furosemide11 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.

Amy Lynn Choy among 14,451 physician assistant records in California

Amy Lynn Choy 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 2014, is newer than 38% of them.

  • NPI issued2014 · 38% of these records are older, 59% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 50% of these records are
  • 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).

5 physician assistant records list a practice address in Hercules

They are 5 of the 277 NPPES records with a practice address in Hercules, and 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Sheena Mae Aguilar, PA-CHercules, CA 945471659141430
  2. Wendy Mazursky, PA-C, MSHercules, CA 945471255425583
  3. Oksana Peters, PAHercules, CA 945471124143227
  4. Bogdan RisticHercules, CA 945471609463538
  5. Albert Ahoy, PA-CCastro Valley, CA 945461356878136
  6. Ahlam Algazzali, PHYSICIAN ASSISTANTCastro Valley, CA 945461083210017
  7. Corina Clark, P.A.Castro Valley, CA 945461720480049
  8. Cherie Clark, PA-CCastro Valley, CA 945461780992560

Common questions

What is Amy Lynn Choy's NPI number?

Amy Lynn Choy's National Provider Identifier (NPI) is 1063822187, issued on Apr 28, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Amy Lynn Choy located?

The NPPES record lists a practice address at 600 Alfred Nobel Dr Ste A, Hercules, CA, 94547. Phone: (510) 984-1111. Providers update this record themselves, so call before visiting.

How can I verify Amy Lynn Choy's license?

NPPES lists California license number PA52955, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Amy Lynn Choy prescribe under Medicare Part D?

In 2024, Amy Lynn Choy had 56 Medicare Part D claims; 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.