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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Horizon House

Mental Illness Community Based Residential Treatment Facility in Portland, OR · enumerated 2009 · authorized official Mary Monnat, President/Ceo.

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

National Provider Identifier

1962636357

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Registry record

Entity type Organization (Type 2)
Legal business name Horizon House
Parent organization Lifeworks Northwest
Practice address 5415 Sw Westgate Dr, Portland, OR, 97221
Phone (503) 645-3581
Fax (503) 629-8517
Enumeration date May 13, 2009
Last updated in NPPES Mar 9, 2022

Taxonomy & classification

320800000X Mental Illness Community Based Residential Treatment Facility Residential Treatment Facilities Primary

Authorized official

Name Mary Monnat
Title President/Ceo
Phone (503) 645-3581

Other identifiers

Identifier Type State Issuer
504853 Medicaid OR -

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.

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Frequently asked questions

Who is the authorized official for Horizon House?
NPPES lists Mary Monnat (President/Ceo) as the authorized official for this organization.
What is the NPI number for Horizon House?
The NPI for Horizon House is 1962636357, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-09.