Horizon Services, Inc
Horizon Services, Inc is a healthcare organization registered as Substance Abuse Rehabilitation Facility in San Leandro, CA, holding Type 2 (organization) NPI 1427234921 since 2008. The authorized official on file is Mark Cloutier, Executive Director.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1427234921 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Horizon Services, Inc |
| Other name | <Unavail> |
| Practice address | 2035 FAIRMONT DR, San Leandro, CA, 94578 |
| Phone | 8668667496 |
| Enumeration date | 2008-01-14 |
| Last updated in NPPES | 2017-09-26 |
Authorized official
| Name | Mark Cloutier |
|---|---|
| Title | Executive Director |
| Phone | 5105822100 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 324500000X | Substance Abuse Rehabilitation Facility | Primary | — | — |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 8118 | Other | CA | PROVIDER |
Copy-ready billing details
Provider: Horizon Services, Inc NPI: 1427234921 Taxonomy: 324500000X (Substance Abuse Rehabilitation Facility) Address: 2035 FAIRMONT DR, San Leandro, CA, 94578
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1881724219 | Vidal Antonio Lopez | Individual | Marriage & Family Therapist | San Leandro, CA |
| 1790964682 | Cyndi Harris Edwards | Individual | Addiction (Substance Use Disorder) Counselor | San Leandro, CA |
| 1720257280 | Laura Rodriguez | Individual | Addiction (Substance Use Disorder) Counselor | San Leandro, CA |
| 1942471818 | Edward Harvey | Individual | Addiction (Substance Use Disorder) Counselor | San Leandro, CA |
| 1164678801 | Barbara Madeiros | Individual | Addiction (Substance Use Disorder) Counselor | San Leandro, CA |
| 1689819237 | Janette Gladney | Individual | Addiction (Substance Use Disorder) Counselor | San Leandro, CA |
| 1134356538 | Anthony Mascarenas | Individual | Addiction (Substance Use Disorder) Counselor | San Leandro, CA |
| 1174752646 | Taishia Thomas | Individual | Addiction (Substance Use Disorder) Counselor | San Leandro, CA |
Verify this record
Cross-check NPI 1427234921 against the authoritative CMS record: view Horizon Services, Inc on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2017-09-26.