Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Helena Chih-Hua Chang
Urology Physician in Seattle, WA · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1366731887
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Registry record
Entity type Individual (Type 1)
Name Helena Chih-Hua Chang
Sex Female
Practice address 1536 N 115th St Ste 300, Seattle, WA, 98133
Phone (206) 668-5215
Enumeration date Apr 5, 2011
Last updated in NPPES Jan 6, 2022
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 8967957 | Other | WA | MEDICARE PIN |
| 1366731887 | 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.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Helena Chang?
Helena Chang is registered in NPPES with the primary taxonomy of Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-06.