NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Hilary Kay Chiem, O.D.

Optometrist in Foster City, CA · enumerated 2015.

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

National Provider Identifier

1265815609

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Hilary Kay Chiem
Credential O.D.
Sex Female
Practice address Foster City, CA, 94404
Phone (650) 243-7584
Fax (650) 212-0279
Enumeration date Jul 2, 2015
Last updated in NPPES Jan 7, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 8647T (TX) Secondary
152W00000X Optometrist Eye and Vision Services Providers · License 15330 (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

Where does Hilary Chiem practice?
The practice location on file with NPPES is in Foster City, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Hilary Chiem?
The National Provider Identifier (NPI) for Hilary Chiem is 1265815609, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-07.