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Cassandra Liew

Optometrist in Philadelphia, PA · enumerated 2015 · practices at Warby Parker Inc..

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

National Provider Identifier

1336511765

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Registry record

Entity type Individual (Type 1)
Name Cassandra Liew
Sex Female
Practice address 1523 Walnut St, Philadelphia, PA, 19102
Phone (215) 845-0987
Enumeration date Oct 25, 2015
Last updated in NPPES Jan 20, 2017

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OP1000336 (DC) Secondary
152W00000X Optometrist Eye and Vision Services Providers · License TUV008366 (NY) Secondary
152W00000X Optometrist Eye and Vision Services Providers · License OEG003131 (PA) Primary

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

Where does Cassandra Liew practice?
The practice location on file with NPPES is in Philadelphia, PA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Cassandra Liew?
The National Provider Identifier (NPI) for Cassandra Liew is 1336511765, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-01-20.