Yejoo Jeon
Gastroenterology Physician · Redwood City, CA
Yejoo Jeon is a gastroenterology physician with a practice address in Redwood City, California, and NPI 1851851679, issued on Mar 20, 2019. Check the license (California 177839, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yejoo Jeon
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 177839 CA
Self-reported in NPPES; status is on the state search - Practice location
- 905 Maple St Dept 290, Redwood City, CA 94063
- Phone
- (650) 299-2537
- Enumerated
- Mar 20, 2019
- Record last updated
- Aug 11, 2025
- Medicare enrollment
- Enrolled (PECOS I20251001004035); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Verify Yejoo Jeon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 177839Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average gastroenterology physician in 2024
100 Medicare Part D claims for 34 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Omeprazole35 claims
- Ciprofloxacin Hcl12 claims
- Linzess12 claims
- Pantoprazole Sodium11 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.
Bills Medicare through one group practice
- Permanente Medical Group IncRedwood City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yejoo Jeon among 2,140 gastroenterology physician records in California
Yejoo Jeon is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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 96% of them.
- NPI issued2019 · 96% of these records are older, 2% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2019 · median 2002 among the 1,538 with a school on file
- Record last updated2025 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Redwood City → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Ming-Shing Chiu, MDRedwood City, CA 940631154409712
- Francis Chui, MDRedwood City, CA 940631033297684
- Henry Chun, MDRedwood City, CA 940631952489502
- Christina Dimopoulos-Verma, MDRedwood City, CA 940631053976738
- Vivian Ng, M.D.Redwood City, CA 940631700026416
- Madhuri BadrinathRedwood City, CA 940621972030146
- Susan Cummings, MDRedwood City, CA 940621619946514
- Betty Ho, M.D.Redwood City, CA 940621134168750
Common questions
What is Yejoo Jeon's NPI number?
Yejoo Jeon's National Provider Identifier (NPI) is 1851851679, issued on Mar 20, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Yejoo Jeon located?
The NPPES record lists a practice address at 905 Maple St Dept 290, Redwood City, CA, 94063. Phone: (650) 299-2537. Providers update this record themselves, so call before visiting.
How can I verify Yejoo Jeon's license?
NPPES lists California license number 177839, 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 Yejoo Jeon prescribe under Medicare Part D?
In 2024, Yejoo Jeon had 100 Medicare Part D claims for 34 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
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.