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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JI IL JEON MD
NPI 1710629043
Internal Medicine - Infectious Disease in Fresno, CA

Active since April 07, 2022
155 N FRESNO ST # 307, FRESNO, CA 93701(559) 459-4502 Get Directions Write a Review

NPPES record last updated: July 30, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Jul 30, 2026, Jul 25, 2026, Apr 4, 2025 and 1 more (4 updates tracked since 2022).

About Ji Il Jeon Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JI IL JEON MD (NPI 1710629043) is an individual infectious disease provider in Fresno, California, licensed in California (A201109) and active in the NPI registry since April 2022.

NPPES Registry Identity

NPI1710629043
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameJI IL JEONCredential: MD
Location Address155 N FRESNO ST # 307Fresno, CA 93701-2302
Mailing Address155 N Fresno St # 307Fresno, CA 93701-2302
Phone(559) 459-4502
Sole ProprietorNo
Enumeration DateApril 7, 2022
Last NPPES UpdateJuly 30, 20264 updates tracked since enumeration
NPPES CertifiedJuly 30, 2026
✔ NPI 1710629043 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CA · A201109
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
155 N FRESNO ST # 307, Fresno, CA 93701
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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 Ji Il Jeon's NPI number?

The NPI number for Ji Il Jeon is 1710629043. It was assigned to this individual provider in the NPPES registry on April 7, 2022.

Where is Ji Il Jeon located?

Ji Il Jeon practices at 155 N Fresno St # 307, Fresno, CA 93701. The listed phone number is (559) 459-4502.

What is Ji Il Jeon's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

When was this NPI record last updated?

The NPPES record for Ji Il Jeon was last updated on July 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days 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.