Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William Weng-Ping Ko, M.D. A Professional Corp

Ophthalmologic Surgery Clinic/Center in San Gabriel, CA · enumerated 2007 · authorized official William Ko, President.

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

National Provider Identifier

1467643940

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Registry record

Entity type Organization (Type 2)

Legal business name William Weng-Ping Ko, M.D. A Professional Corp

Practice address 117 S Mission Dr, San Gabriel, CA, 91776

Phone (626) 284-2168

Fax (626) 284-7980

Enumeration date Aug 8, 2007

Last updated in NPPES Feb 9, 2018

Taxonomy & classification

261QS0132X Ophthalmologic Surgery Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name William Ko

Title President

Phone (626) 284-2168

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

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is William Weng-Ping Ko, M.D. A Professional Corp?

William Weng-Ping Ko, M.D. A Professional Corp is registered in NPPES as a Ophthalmologic Surgery Clinic/Center (its primary provider taxonomy).

Providers at this address

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William Ko Ophthalmology Physician · San Gabriel, CA NPI 1548268873

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-09.