Won Jin Jeon, MD
Internal Medicine Physician · Loma Linda, CA
Won Jin Jeon, MD is an internal medicine physician with a practice address in Loma Linda, California, and NPI 1851911267, issued on Apr 26, 2020. Check the license (California A186012, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Won Jin Jeon
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A186012 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11234 Anderson Street, Loma Linda, CA 92354
- Phone
- (909) 558-6688
- Enumerated
- Apr 26, 2020
- Record last updated
- Jul 11, 2025
- Medicare enrollment
- Enrolled (PECOS I20250919000969); may accept Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 11234 Anderson Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alanna Asgeirsson, MDStudent in an Organized Health Care Education/Training Program1306535372
Verify Won Jin Jeon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A186012Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Won Jin Jeon among 17,696 internal medicine physician records in California
Won Jin Jeon, MD 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 not. Its NPI, issued in 2020, is newer than 89% of them.
- NPI issued2020 · 89% of these records are older, 8% newer
- In a Medicare fileNo · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2020 · 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).
212 internal medicine physician records list a practice address in Loma Linda
They are 212 of the 4,863 NPPES records with a practice address in Loma Linda, and 17,696 internal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 17,696 in California → Every provider in Loma Linda → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Baylink, M.D.Loma Linda, CA 923541518983113
- David Bee, M.D.Loma Linda, CA 923541720005176
- Adrian Cotton, M.D.Loma Linda, CA 923541639196850
- Debra Craig, M.D.Loma Linda, CA 923541255351151
- Balu Gadhe, M.D.Loma Linda, CA 923541740233808
- Bevan Geslani, M.D.Loma Linda, CA 923541992741862
- Susan Hall, M.D.Loma Linda, CA 923541972523876
- Suchaya Jinamornphongs, M.D.Loma Linda, CA 923541649299876
Common questions
What is Won Jin Jeon, MD's NPI number?
Won Jin Jeon, MD's National Provider Identifier (NPI) is 1851911267, issued on Apr 26, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Won Jin Jeon, MD located?
The NPPES record lists a practice address at 11234 Anderson Street, Loma Linda, CA, 92354. Phone: (909) 558-6688. Providers update this record themselves, so call before visiting.
How can I verify Won Jin Jeon, MD's license?
NPPES lists California license number A186012, 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. 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.