Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William C Chu, M.D.

Diagnostic Radiology Physician in Baldwin Park, CA · enumerated 2005.

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

National Provider Identifier

1124018551

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name William C Chu

Credential M.D.

Sex Male

Practice address 14148 Francisquito Ave, Baldwin Park, CA, 91706

Phone (213) 626-7816

Fax (213) 621-7787

Enumeration date Oct 26, 2005

Last updated in NPPES Sep 30, 2015

Taxonomy & licenses

2085B0100X Body Imaging Physician Allopathic & Osteopathic Physicians · License A38858 (CA) Secondary

2085N0904X Nuclear Radiology Physician Allopathic & Osteopathic Physicians · License A38858 (CA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License A38858 (CA) Primary

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License A38858 (CA) Secondary

2085U0001X Diagnostic Ultrasound Physician Allopathic & Osteopathic Physicians · License A38858 (CA) Secondary

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
00A388580	Other	CA	BLUE SHIELD
00A388582	Other	CA	BLUE SHIELD PIN
300082097	Other	CA	RAILROAD MEDICARE
00A388582	Medicaid	CA	-

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is William Chu?

William Chu is registered in NPPES with the primary taxonomy of Diagnostic Radiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-09-30.