Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Horizon House

Q: What is the NPI number for Horizon House?

The NPI for Horizon House is 1568558831, a Type 2 (organization) record in the CMS NPPES registry.

Clinical Social Worker in Cortland, NY · enumerated 2006 · authorized official Mark Thayer, Director of Community Services.

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

National Provider Identifier

1568558831

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Registry record

Entity type Organization (Type 2)

Legal business name Horizon House

Other name <Unavail>

Practice address 7 Clayton Avenue, Cortland, NY, 13045

Phone (607) 758-6100

Fax (607) 758-6116

Enumeration date Oct 5, 2006

Last updated in NPPES Feb 28, 2012

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 043908-1 (NY) Primary

Authorized official

Name Mark Thayer

Title Director of Community Services

Phone (607) 758-6110

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

Who is the authorized official for Horizon House?

NPPES lists Mark Thayer (Director of Community Services) as the authorized official for this organization.

What is the NPI number for Horizon House?

The NPI for Horizon House is 1568558831, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-28.