NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cassandra Laing Chow, OD

Optometrist in San Francisco, CA · enumerated 2021 · practices at Luxottica of America Inc..

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

National Provider Identifier

1184398190

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Cassandra Laing Chow
Credential OD
Sex Female
Practice address 3251 20th Ave Ste 219, San Francisco, CA, 94132
Enumeration date Aug 3, 2021
Last updated in NPPES Feb 15, 2022

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 34873 (CA) Primary
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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Cassandra Chow's NPI record?
Cross-check NPI 1184398190 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1184398190 active?
Yes, as of the latest NPPES snapshot, NPI 1184398190 is active (record last updated 2022-02-15).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-15.