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Dennis J Guerrieri Od Inc

Optometrist in Davis, CA · enumerated 2016 · authorized official Dennis Guerrieri, Owner/Doctor.

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

National Provider Identifier

1922466895

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Registry record

Entity type Organization (Type 2)
Legal business name Dennis J Guerrieri Od Inc
Practice address 231 C St, Davis, CA, 95616
Phone (530) 758-4000
Fax (530) 758-4016
Enumeration date Feb 5, 2016
Last updated in NPPES Feb 5, 2016

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 8478 (CA) Primary

Authorized official

Name Dennis Guerrieri
Title Owner/Doctor
Phone (530) 758-4000

Other identifiers

Identifier Type State Issuer
SD0084781 Medicaid CA -

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

What type of organization is Dennis J Guerrieri Od Inc?
Dennis J Guerrieri Od Inc is registered in NPPES as a Optometrist (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-02-05.