Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William Chen M.D. Inc.

Ophthalmology Physician in Irvine, CA · enumerated 2008 · authorized official William Chen, President.

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

National Provider Identifier

1619141629

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Registry record

Entity type Organization (Type 2)

Legal business name William Chen M.D. Inc.

Practice address 18 Endeavor Ste 305, Irvine, CA, 92618

Phone (949) 585-5188

Fax (949) 288-0252

Enumeration date Apr 22, 2008

Last updated in NPPES Jan 24, 2022

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License G 34389 (CA) Primary

261Q00000X Clinic/Center Ambulatory Health Care Facilities Secondary

Authorized official

Name William Chen

Title President

Phone (562) 426-0603

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2022-01-24. Verify at npiregistry.cms.hhs.gov.

Where is William Chen M.D. Inc. located?

The practice location on file with NPPES is in Irvine, CA.

Providers at this address

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William Chen Ophthalmic Plastic and Reconstructive Surgery Physician · Irvine, CA NPI 1558420661

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-24.