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Jiyon Jane Choi, MD

Hematology & Oncology Physician in Antioch, CA · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1144437567

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Registry record

Entity type Individual (Type 1)
Name Jiyon Jane Choi
Credential MD
Sex Female
Practice address 4721 Dallas Ranch Rd, Antioch, CA, 94531
Phone (925) 778-0679
Fax (925) 778-3567
Enumeration date May 16, 2007
Last updated in NPPES Apr 18, 2013

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License A106992 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Jiyon Choi practice?
The practice location on file with NPPES is in Antioch, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jiyon Choi?
The National Provider Identifier (NPI) for Jiyon Choi is 1144437567, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-18.