Jieun Ahn
Internal Medicine Physician · Riverside, CA
Jieun Ahn is an internal medicine physician with a practice address in Riverside, California, and NPI 1225771173, issued on Apr 19, 2022. Check the license (California A191571, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jieun Ahn
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A191571 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7117 Brockton Ave, Riverside, CA 92506
- Phone
- (951) 782-3619
- Enumerated
- Apr 19, 2022
- Record last updated
- Oct 15, 2025
- Fax
- (951) 784-3270
- Medicare enrollment
- Enrolled (PECOS I20251010001515); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 2022
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 7117 Brockton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jieun Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A191571Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Riverside Medical Clinic IncRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jieun Ahn among 17,696 internal medicine physician records in California
Jieun Ahn is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 95% of them.
- NPI issued2022 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2022 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
187 internal medicine physician records list a practice address in Riverside
They are 187 of the 13,893 NPPES records with a practice address in Riverside, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Riverside → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mark Allison, M.D.Riverside, CA 925061164471223
- Sarah Chae, MDRiverside, CA 925061003872169
- Stephen Colucci, MDRiverside, CA 925061245211614
- Andrew Corr, MDRiverside, CA 925061619958089
- Melanie Crane, MDRiverside, CA 925061083695456
- Leah Hopkins, MDRiverside, CA 925061548239932
- Tony Kwon, MDRiverside, CA 925061164404729
- Catherine Larson, MDRiverside, CA 925061255313060
Common questions
What is Jieun Ahn's NPI number?
Jieun Ahn's National Provider Identifier (NPI) is 1225771173, issued on Apr 19, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Jieun Ahn located?
The NPPES record lists a practice address at 7117 Brockton Ave, Riverside, CA, 92506. Phone: (951) 782-3619. Providers update this record themselves, so call before visiting.
How can I verify Jieun Ahn's license?
NPPES lists California license number A191571, 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.
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.