NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Janet Yoon

Optometrist in Norco, CA · enumerated 2019 · practices at Norco Valley Optometry, Inc.

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

National Provider Identifier

1679127666

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Janet Yoon
Sex Female
Practice address 1524 4th St Ste 101, Norco, CA, 92860
Phone (951) 407-1238
Enumeration date Jul 29, 2019
Last updated in NPPES Jul 29, 2019

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 34237TLG (CA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Janet Yoon?
The National Provider Identifier (NPI) for Janet Yoon is 1679127666, a Type 1 (individual) record in the CMS NPPES registry.
Where does Janet Yoon practice?
The practice location on file with NPPES is in Norco, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-07-29.