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Ellin Ying-Chun Wu, O.D.

Corneal and Contact Management Optometrist in Sunnyvale, CA · enumerated 2008 · practices at Sutter Bay Medical Foundation.

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

National Provider Identifier

1063660660

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Registry record

Entity type Individual (Type 1)
Name Ellin Ying-Chun Wu
Credential O.D.
Sex Female
Practice address 1085 W El Camino Real, Sunnyvale, CA, 94087
Phone (408) 524-5900
Fax (408) 524-5950
Enumeration date Sep 8, 2008
Last updated in NPPES Aug 30, 2021

Taxonomy & licenses

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License OPT13544 (CA) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
OPT13544 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.

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Frequently asked questions

What is the NPI number for Ellin Wu?
The National Provider Identifier (NPI) for Ellin Wu is 1063660660, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ellin Wu practice?
The practice location on file with NPPES is in Sunnyvale, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-30.