Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

John Marshall

Basic Emergency Medical Technician in San Leandro, CA · enumerated 2015 · practices at Horizon Services, Inc.

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

National Provider Identifier

1790172492

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Registry record

Entity type Individual (Type 1)

Name John Marshall

Sex Male

Practice address San Leandro, CA, 94578

Phone (510) 346-7836

Enumeration date Apr 20, 2015

Last updated in NPPES Apr 20, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

146N00000X Basic Emergency Medical Technician Emergency Medical Service Providers Primary

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

What is the NPI number for John Marshall?

The National Provider Identifier (NPI) for John Marshall is 1790172492, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Marshall practice?

The practice location on file with NPPES is in San Leandro, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-20.