NPI Portal NPI Lookup & Verification

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

Dr. Stephen Alan Quon, D.D.S.

General Practice Dentistry in Foster City, CA · enumerated 2008 · practices at Wilson-Wu Chiropractic, Inc..

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

National Provider Identifier

1356509921

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Stephen Alan Quon
Credential D.D.S.
Sex Male
Practice address Foster City, CA, 94404
Fax (650) 345-2061
Enumeration date May 29, 2008
Last updated in NPPES May 29, 2008

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 33834 (CA) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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 Stephen Quon 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 Stephen Quon?
The National Provider Identifier (NPI) for Stephen Quon is 1356509921, 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 2008-05-29.