Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Yi Chang Hsieh

Urology Physician in Marshfield, WI · enumerated 2005.

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

National Provider Identifier

1184628661

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Registry record

Entity type Individual (Type 1)

Name Yi Chang Hsieh

Sex Male

Practice address 1000 N Oak Ave, Marshfield, WI, 54449

Phone (715) 387-5511

Enumeration date Jun 13, 2005

Last updated in NPPES Jun 23, 2026

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License MD00043153 (WA) Secondary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 15099 (WI) Primary

Other identifiers

Identifier	Type	State	Issuer
1427128198	Other	WA	GROUP NPI
7125081	Medicaid	WA	-

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 1184628661 active?

Yes, as of the latest NPPES snapshot, NPI 1184628661 is active (record last updated 2026-06-23).

How do I verify Yi Hsieh's NPI record?

Cross-check NPI 1184628661 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 2026-06-23.