Ami A. Choi, PA
Medical Physician Assistant · San Ysidro, CA
Ami A. Choi, PA is a medical physician assistant with a practice address in San Ysidro, California, and NPI 1083792311, issued on Nov 2, 2006. Check the license (California PA18509, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ami A. Choi
- Credential
- PA
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA18509 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4004 Beyer Blvd, San Ysidro, CA 92173
- Phone
- (619) 428-4463
- Enumerated
- Nov 2, 2006
- Record last updated
- Feb 9, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid IDs
- 1740214733 CA
1083792311 CA - Medicare enrollment
- Enrolled (PECOS I20070112000327); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 4004 Beyer Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lizbeth AcunaCase Manager/Care Coordinator1134363187
- Noemi Arrieta, DOFamily Medicine Physician1912223496
- Salvador Balvaneda, IMFTMarriage & Family Therapist1659413086
- Vanessa Bastidas, MD, MPHFamily Medicine Physician1831893478
- Rita BedermanMarriage & Family Therapist1376684142
- Justin Bennink, M.D.Family Medicine Physician1083033146
Verify Ami A. Choi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA18509Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average medical physician assistant in 2024
283 Medicare Part D claims for 158 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Ketoconazole56 claims
- Fluorouracil51 claims
- Triamcinolone Acetonide23 claims
- Hydrocortisone20 claims
- Metronidazole17 claims
- Gabapentin14 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): 73.6 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: $1,063.88
39 payments; by number, the most common kind was food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 16,165 providers of this specialty with any payment received $1,055.00 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
- Sharp Rees-Stealy Medical Group IncSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ami A. Choi among 3,376 medical physician assistant records in California
Ami A. Choi, PA is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 80% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2006 · median 2012 among the 1,347 with a school on file
- Record last updated2009 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 medical physician assistant records list a practice address in San Ysidro
They are 4 of the 218 NPPES records with a practice address in San Ysidro, and 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in San Ysidro → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Clenton Clarion, PA-CSan Ysidro, CA 921731457495764
- Hung Gi, PA-CSan Ysidro, CA 921731023207404
- Bonnie Ochoa, PA-C, CDESan Ysidro, CA 921731649364332
- Sherilyn Rosenblatt, PA-CSan Diego, CA 921731114041621
- Matthew Devries, P.A.-CSan Diego, CA 921611487677092
- Mary Parker, PA-CSan Diego, CA 921611982795928
- William Peterson, PA-CSan Diego, CA 921611982644084
- Matthew Colton, PA-CSan Diego, CA 921541639476401
Common questions
What is Ami A. Choi, PA's NPI number?
Ami A. Choi, PA's National Provider Identifier (NPI) is 1083792311, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ami A. Choi, PA located?
The NPPES record lists a practice address at 4004 Beyer Blvd, San Ysidro, CA, 92173. Phone: (619) 428-4463. Providers update this record themselves, so call before visiting.
How can I verify Ami A. Choi, PA's license?
NPPES lists California license number PA18509, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ami A. Choi, PA prescribe under Medicare Part D?
In 2024, Ami A. Choi, PA had 283 Medicare Part D claims for 158 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
What is Ami A. Choi, PA's MIPS final score?
The 2023 MIPS final score is 73.6 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.