Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Treehouse Nw Inc

Q: What is the NPI number for Treehouse Nw Inc?

The NPI for Treehouse Nw Inc is 1477002228, a Type 2 (organization) record in the CMS NPPES registry.

Substance Abuse Rehabilitation Facility in Portland, OR · enumerated 2016 · authorized official Clayton Mcmillen, Ceo.

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

National Provider Identifier

1477002228

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Registry record

Entity type Organization (Type 2)

Legal business name Treehouse Nw Inc

Other name <Unavail>

Practice address 4713 N Albina Ave, Suite 301, Portland, OR, 97217

Phone (949) 438-2293

Enumeration date Sep 21, 2016

Last updated in NPPES Oct 14, 2016

Taxonomy & classification

324500000X Substance Abuse Rehabilitation Facility Residential Treatment Facilities · License 1246661-99 (OR) Primary

Authorized official

Name Clayton Mcmillen

Title Ceo

Phone (808) 341-2424

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 Treehouse Nw Inc?

The NPI for Treehouse Nw Inc is 1477002228, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Treehouse Nw Inc?

NPPES lists Clayton Mcmillen (Ceo) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-14.