Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Greg Horner Medical Inc

Q: What is the NPI number for Greg Horner Medical Inc?

The NPI for Greg Horner Medical Inc is 1821759291, a Type 2 (organization) record in the CMS NPPES registry.

Multi-Specialty Clinic/Center in Pleasanton, CA · enumerated 2022 · authorized official Gregory Horner, President.

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

National Provider Identifier

1821759291

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Registry record

Entity type Organization (Type 2)

Legal business name Greg Horner Medical Inc

Practice address 4626 Willow Rd, Pleasanton, CA, 94588

Phone (925) 984-4734

Enumeration date Jan 6, 2022

Last updated in NPPES Jan 6, 2022

Taxonomy & classification

261QM1300X Multi-Specialty Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Gregory Horner

Title President

Phone (925) 984-4734

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 Greg Horner Medical Inc?

NPPES lists Gregory Horner (President) as the authorized official for this organization.

What is the NPI number for Greg Horner Medical Inc?

The NPI for Greg Horner Medical Inc is 1821759291, 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 2022-01-06.