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Gary A Osias

Optometrist in Castro Valley, CA · enumerated 2007 · authorized official Lydia Osias, Business Manager.

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

National Provider Identifier

1467503144

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Registry record

Entity type Organization (Type 2)
Legal business name Gary A Osias
Other name <Unavail>
Practice address 2687 Castro Valley Blvd, Castro Valley, CA, 94546
Phone (510) 581-1553
Fax (510) 581-1929
Enumeration date Jan 16, 2007
Last updated in NPPES Aug 3, 2011

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 7027T (CA) Primary

Authorized official

Name Lydia Osias
Title Business Manager
Phone (510) 581-1553

Other identifiers

Identifier Type State Issuer
GSD000960 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 is the NPI number for Gary A Osias?
The NPI for Gary A Osias is 1467503144, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Gary A Osias?
NPPES lists Lydia Osias (Business Manager) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-03.