NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Unen Du Hsu, MD, PC

Point of Service in Phoenix, AZ · enumerated 2010 · authorized official Stacy Hsu, Office Manager.

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

National Provider Identifier

1891095915

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Unen Du Hsu, MD, PC
Practice address 1010 E Mcdowell Rd, Suite 104, Phoenix, AZ, 85006
Fax (602) 252-4452
Enumeration date Oct 22, 2010
Last updated in NPPES Oct 22, 2010

Taxonomy & classification

305S00000X Point of Service Managed Care Organizations · License 8373 (AZ) Primary

Authorized official

Name Stacy Hsu
Title Office Manager

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

Who is the authorized official for Unen Du Hsu, MD, PC?
NPPES lists Stacy Hsu (Office Manager) as the authorized official for this organization.
What is the NPI number for Unen Du Hsu, MD, PC?
The NPI for Unen Du Hsu, MD, PC is 1891095915, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-10-22.