Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Shirley Yu, O.D.
Optometrist in Palo Alto, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689872624
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Registry record
Entity type Individual (Type 1)
Name Shirley Yu
Credential O.D.
Sex Female
Practice address 795 El Camino Real, Palo Alto, CA, 94301
Phone (650) 321-4121
Enumeration date Jul 10, 2007
Last updated in NPPES May 27, 2020
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
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.
Frequently asked questions
What is the NPI number for Shirley Yu?
The National Provider Identifier (NPI) for Shirley Yu is 1689872624, a Type 1 (individual) record in the CMS NPPES registry.
Where does Shirley Yu practice?
The practice location on file with NPPES is in Palo Alto, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-05-27.