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Horizon Services, Incorporated

Substance Abuse Rehabilitation Facility in San Mateo, CA · enumerated 2011 · authorized official Mark Cloutier, Executive Director.

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

National Provider Identifier

1689961617

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Registry record

Entity type Organization (Type 2)
Legal business name Horizon Services, Incorporated
Other name <Unavail>
Practice address 2251 Palm Ave, San Mateo, CA, 94403
Phone (650) 513-6500
Fax (650) 345-7023
Enumeration date Jun 28, 2011
Last updated in NPPES May 23, 2022

Taxonomy & classification

324500000X Substance Abuse Rehabilitation Facility Residential Treatment Facilities Primary

Authorized official

Name Mark Cloutier
Title Executive Director
Phone (510) 582-2100

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2022-05-23. Verify at npiregistry.cms.hhs.gov.
Where is Horizon Services, Incorporated located?
The practice location on file with NPPES is in San Mateo, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-23.