Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Cristalle Kwok, OD

Optometrist in Fontana, CA · enumerated 2024.

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

National Provider Identifier

1801618103

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Registry record

Entity type Individual (Type 1)

Name Dr. Cristalle Kwok

Credential OD

Sex Female

Practice address 17064 Slover Avenue, Palm Court Suite 104, Fontana, CA, 92337

Phone (909) 258-4380

Enumeration date Oct 28, 2024

Last updated in NPPES Oct 28, 2024

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 35870 (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

Is NPI 1801618103 active?

Yes, as of the latest NPPES snapshot, NPI 1801618103 is active (record last updated 2024-10-28).

How do I verify Cristalle Kwok's NPI record?

Cross-check NPI 1801618103 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-28.