NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Sierra Eye Optometric Corp

Eyewear Supplier in Visalia, CA · enumerated 2007 · authorized official William Gerlach, President.

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

National Provider Identifier

1235262726

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Sierra Eye Optometric Corp
Practice address 2830 W Main St, Visalia, CA, 93291
Phone (559) 636-1000
Fax (559) 733-7438
Enumeration date Mar 13, 2007
Last updated in NPPES Sep 11, 2025

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License OPT60330T (CA) Secondary
332H00000X Eyewear Supplier Suppliers Primary

Authorized official

Name William Gerlach
Title President
Phone (559) 636-1000

Other identifiers

Identifier Type State Issuer
SD0060330 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Sierra Eye Optometric Corp?
The NPI for Sierra Eye Optometric Corp is 1235262726, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Sierra Eye Optometric Corp?
NPPES lists William Gerlach (President) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.