Aaron Cho, D.O.
Emergency Medicine Physician · Garden Grove, CA
Aaron Cho, D.O. is an emergency medicine physician with a practice address in Garden Grove, California, and NPI 1164841482, issued on Apr 15, 2014. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aaron Cho
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 3338 TN
Self-reported in NPPES; status is on the state search - Practice location
- 9902 Royal Palm Blvd, Garden Grove, CA 92841
- Phone
- (714) 722-7983
- Enumerated
- Apr 15, 2014
- Record last updated
- Nov 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20201209003099); accepts Medicare assignment
- Medical or professional school
- Rocky Vista University College Of Osteopathic Med, 2014
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Verify Aaron Cho in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average emergency medicine physician in 2024
455 Medicare Part D claims for 322 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 36 claims were for opioids.
Most prescribed
- Ibuprofen45 claims
- Azithromycin34 claims
- Meloxicam32 claims
- Cefuroxime26 claims
- Prednisone23 claims
- Albuterol Sulfate Hfa21 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): 100 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).
Bills Medicare through one group practice
- Southern California Permanente Medical GroupBellflower, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron Cho among 7,751 emergency medicine physician records in California
Aaron Cho, D.O. 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 2014, is newer than 69% of them.
- NPI issued2014 · 69% of these records are older, 28% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2014 · median 2011 among the 4,560 with a school on file
- Record last updated2021 · 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 Garden Grove → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Viet Tran, M.D.Garden Grove, CA 928411154610939
- David NgoGarden Grove, CA 928401922240423
- Don HaGarden Grove, CA 928431386339232
- Alec Huynh, M.DGarden Grove, CA 928431477577575
- Dan Nadler, M.D.Garden Grove, CA 928431053424044
- Kim-Tan Nguyen, M.D.Garden Grove, CA 928431174752836
- Brian Rhee, M.DGarden Grove, CA 928431346290772
- Carl Stilson, M.D.Garden Grove, CA 928431831204262
Common questions
What is Aaron Cho, D.O.'s NPI number?
Aaron Cho, D.O.'s National Provider Identifier (NPI) is 1164841482, issued on Apr 15, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Cho, D.O. located?
The NPPES record lists a practice address at 9902 Royal Palm Blvd, Garden Grove, CA, 92841. Phone: (714) 722-7983. Providers update this record themselves, so call before visiting.
How can I verify Aaron Cho, D.O.'s license?
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 Aaron Cho, D.O. prescribe under Medicare Part D?
In 2024, Aaron Cho, D.O. had 455 Medicare Part D claims for 322 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Aaron Cho, D.O.'s MIPS final score?
The 2023 MIPS final score is 100 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.