Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jefferson Y Chan, M.D., PH.D.

Clinical Pathology/Laboratory Medicine Physician in Orange, CA · enumerated 2007.

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

National Provider Identifier

1871713271

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Registry record

Entity type Individual (Type 1)

Name Jefferson Y Chan

Credential M.D., PH.D.

Sex Male

Practice address 101 the City Dr S, Orange, CA, 92868

Phone (714) 456-6141

Fax (714) 456-5873

Enumeration date Apr 26, 2007

Last updated in NPPES Mar 25, 2008

Taxonomy & licenses

207ZP0105X Clinical Pathology/Laboratory Medicine Physician Allopathic & Osteopathic Physicians · License G84497 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
WG84497A	Other	CA	MEDICARE PTAN
00G844970	Medicaid	CA	-
00G844970	Other	CA	BLUE SHIELD

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1871713271 active?

Yes, as of the latest NPPES snapshot, NPI 1871713271 is active (record last updated 2008-03-25).

How do I verify Jefferson Chan's NPI record?

Cross-check NPI 1871713271 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Amir Seifi Medical Physician Assistant · Orange, CA NPI 1548263015 Melvin Seard Urology Physician · Orange, CA NPI 1538163126 Charles Rosen Orthopaedic Surgery of the Spine Physician · Orange, CA NPI 1548264013 Joseph Ruggio Cardiovascular Disease Physician · Orange, CA NPI 1124023163 Kurt Richards Surgical Physician Assistant · Orange, CA NPI 1598760092 Akash Joshi Body Imaging Physician · Orange, CA NPI 1013913490 Arti Gupta Body Imaging Physician · Orange, CA NPI 1770589152 Lucia Webster Certified Registered Nurse Anesthetist · Orange, CA NPI 1073510590

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-25.