Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Chiau Wen Hsiao, MD

Surgery Physician in Baltimore, MD · enumerated 2006.

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

National Provider Identifier

1326089012

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Registry record

Entity type Individual (Type 1)

Name Chiau Wen Hsiao

Credential MD

Sex Male

Practice address 4419 Falls Road, Baltimore, MD, 21211

Phone (410) 235-8786

Fax (410) 235-2340

Enumeration date Jun 10, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License D0017697 (MD) Primary

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

What is the NPI number for Chiau Wen Hsiao?

The National Provider Identifier (NPI) for Chiau Wen Hsiao is 1326089012, a Type 1 (individual) record in the CMS NPPES registry.

Where does Chiau Wen Hsiao practice?

The practice location on file with NPPES is in Baltimore, MD. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.