AARON CHO D.O.
NPI 1164841482
Emergency Medicine in Garden Grove, CA
About Aaron Cho D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AARON CHO D.O. (NPI 1164841482) is an individual emergency medicine provider in Garden Grove, California, licensed in Tennessee (3338) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS and is a graduate of Rocky Vista University College Of Osteopathic Med (2014).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Aaron Cho D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Aaron Cho reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fullerton, CA 92833
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Norwalk, CA 90650
- Reassigned Medicare billing, California enrollment
- 47 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 1,216 clinicians in this Medicare group
Apple Valley, CA 92307
- Reassigned Medicare billing, California enrollment
- 914 clinicians in this Medicare group
Norton, VA 24273
- Reassigned Medicare billing, Virginia enrollment
- 207 clinicians in this Medicare group
Johnson City, TN 37604
- Reassigned Medicare billing, Tennessee enrollment
- 284 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92841 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Aaron Cho's NPI number?
The NPI number for Aaron Cho is 1164841482. It was assigned to this individual provider in the NPPES registry on April 15, 2014.
Where is Aaron Cho located?
Aaron Cho practices at 9902 Royal Palm Blvd, Garden Grove, CA 92841. The listed phone number is (714) 722-7983.
What is Aaron Cho's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Aaron Cho enrolled in Medicare?
Yes. Aaron Cho is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Aaron Cho's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Cho reassigns Medicare benefits to 6 organizations: Southern California Permanente Medical Group (Fullerton, CA), Coast Plaza Emergency Physicians Group Inc (Norwalk, CA), Inpatient Specialists Of California, PC (San Bernardino, CA), Hospitalist Medicine Physicians Of California, Inc (Apple Valley, CA), Western Virginia Regional Emergency Physicians, LLC (Norton, VA) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aaron Cho's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Aaron Cho accept?
Health plans from Oscar Health and Oscar Insurance Company list Aaron Cho as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Aaron Cho was last updated on November 3, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Aaron Cho, D.O. · NPI 1164841482
Emergency Medicine physician in Garden Grove, California. Individual provider, active in the CMS NPPES registry since April 15, 2014.
## Identity
- **NPI:** 1164841482 (Entity type: Individual)
- **Enumerated:** April 15, 2014
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 3338 (Tennessee)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9902 ROYAL PALM BLVD, Garden Grove, CA 92841-1755
- **Phone:** (714) 722-7983
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Southern California Permanente Medical Group (NPI 1336556059, Fullerton, CA); Coast Plaza Emergency Physicians Group Inc (NPI 1912308446, Norwalk, CA); Inpatient Specialists Of California, PC (NPI 1952792475, San Bernardino, CA); Hospitalist Medicine Physicians Of California, Inc (NPI 1184663965, Apple Valley, CA); Western Virginia Regional Emergency Physicians, LLC (NPI 1386183028, Norton, VA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Rocky Vista University College Of Osteopathic Med, class of 2014
## Record status
- **NPPES last updated:** November 3, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1164841482) · Data from the CMS NPPES public registry.