Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Deborah Chiung Wen Hsu, MD

Pediatric Emergency Medicine (Pediatrics) Physician in Stanford, CA · enumerated 2006.

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

National Provider Identifier

1639259997

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Registry record

Entity type Individual (Type 1)

Name Deborah Chiung Wen Hsu

Credential MD

Sex Female

Practice address 300 Pasteur Dr, Stanford, CA, 94305

Phone (650) 723-4000

Enumeration date Oct 17, 2006

Last updated in NPPES Mar 22, 2024

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License C191942 (CA) Secondary

2080P0204X Pediatric Emergency Medicine (Pediatrics) Physician Allopathic & Osteopathic Physicians · License J9888 (TX) Secondary

2080P0204X Pediatric Emergency Medicine (Pediatrics) Physician Allopathic & Osteopathic Physicians · License C191942 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
124242201	Medicaid	TX	-

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

Is NPI 1639259997 active?

Yes, as of the latest NPPES snapshot, NPI 1639259997 is active (record last updated 2024-03-22).

How do I verify Deborah Hsu's NPI record?

Cross-check NPI 1639259997 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-22.