Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephen O Wangen, N.D.

Naturopath in Mountlake Terrace, WA · enumerated 2010.

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

National Provider Identifier

1285942854

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen O Wangen

Credential N.D.

Sex Male

Practice address 6100 219th St Sw Ste 480, Mountlake Terrace, WA, 98043

Phone (206) 264-1111

Enumeration date Sep 17, 2010

Last updated in NPPES Jun 5, 2025

Taxonomy & licenses

175F00000X Naturopath Other Service Providers · License NT00000920 (WA) Primary

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 specialty is Stephen Wangen?

Stephen Wangen is registered in NPPES with the primary taxonomy of Naturopath. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-05.