Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Brian Hung Han, D.M.D

General Practice Dentistry in Hayward, CA · enumerated 2006.

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

National Provider Identifier

1639264484

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Registry record

Entity type Individual (Type 1)

Name Dr. Brian Hung Han

Credential D.M.D

Sex Male

Practice address 567 W A St Ste B, Hayward, CA, 94541

Phone (510) 347-1350

Fax (510) 743-4167

Enumeration date Oct 4, 2006

Last updated in NPPES Dec 16, 2021

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 47725 (CA) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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 Brian Han's NPI record?

Cross-check NPI 1639264484 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1639264484 active?

Yes, as of the latest NPPES snapshot, NPI 1639264484 is active (record last updated 2021-12-16).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-16.