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

Dr. Keith Yamanishi, O.D.

Optometrist in Mather, CA · enumerated 2006.

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

National Provider Identifier

1043259849

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Registry record

Entity type Individual (Type 1)
Name Dr. Keith Yamanishi
Credential O.D.
Sex Male
Practice address Mather, CA, 95655
Phone (916) 366-5463
Enumeration date Jun 6, 2006
Last updated in NPPES Feb 1, 2023

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OPT9381 (CA) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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

Where does Keith Yamanishi practice?
The practice location on file with NPPES is in Mather, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Keith Yamanishi?
The National Provider Identifier (NPI) for Keith Yamanishi is 1043259849, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-01.