John Choi, DO
Emergency Medicine Physician · Buena Park, CA
John Choi, DO is an emergency medicine physician with a practice address in Buena Park, California, and NPI 1710447941, issued on Mar 22, 2019. Check the license (California 20A20101, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Choi
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 20A20101 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7 Charthouse CV, Buena Park, CA 90621
- Phone
- (714) 943-0854
- Enumerated
- Mar 22, 2019
- Record last updated
- Feb 7, 2023
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Verify John Choi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A20101Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average emergency medicine physician in 2024
181 Medicare Part D claims for 136 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin26 claims
- Cyclobenzaprine Hcl17 claims
- Amoxicillin-Clavulanate Potass11 claims
- Ondansetron Hcl11 claims
- Prednisone11 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): 85.2 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).
John Choi among 7,751 emergency medicine physician records in California
John Choi, DO is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Buena Park → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Rachelle Douglass, MDLa Palma, CA 906231134156649
- Jeffrey Judson, MDLa Palma, CA 906231316988017
- Michelle Lee, D.O.La Palma, CA 906231528592870
- Richard McCauley, MDLa Palma, CA 906231538102587
- Lauren Trainor, DOCypress, CA 906301215957436
- Robert Slough, M.D.Whittier, CA 906061932547809
- Michael Agron, MDWhittier, CA 906051528009842
- Adrian Crisan, M.D.Whittier, CA 906051023056918
Common questions
What is John Choi, DO's NPI number?
John Choi, DO's National Provider Identifier (NPI) is 1710447941, issued on Mar 22, 2019. An NPI identifies a provider in billing; it is not a license.
Where is John Choi, DO located?
The NPPES record lists a practice address at 7 Charthouse CV, Buena Park, CA, 90621. Phone: (714) 943-0854. Providers update this record themselves, so call before visiting.
How can I verify John Choi, DO's license?
NPPES lists California license number 20A20101, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Choi, DO prescribe under Medicare Part D?
In 2024, John Choi, DO had 181 Medicare Part D claims for 136 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is John Choi, DO's MIPS final score?
The 2023 MIPS final score is 85.2 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.