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Clear Lake Optics Corp

Optometrist in Mason City, IA · enumerated 2007 · authorized official Mike Korthals, Owner.

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

National Provider Identifier

1679767339

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Registry record

Entity type Organization (Type 2)
Legal business name Clear Lake Optics Corp
Other name <Unavail>
Practice address 422 S Pierce Ave Ste 100a, Mason City, IA, 50401
Phone (641) 424-0780
Fax (641) 424-2345
Enumeration date Sep 5, 2007
Last updated in NPPES Dec 14, 2023

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 02146 (IA) Primary

Authorized official

Name Mike Korthals
Title Owner
Phone (641) 424-0780

Other identifiers

Identifier Type State Issuer
DB8928 Other IA RAILROAD MEDICARE
1204016 Medicaid IA -
35096 Other IA BLUE CROSS BLUE SHIELD

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

Who is the authorized official for Clear Lake Optics Corp?
NPPES lists Mike Korthals (Owner) as the authorized official for this organization.
What is the NPI number for Clear Lake Optics Corp?
The NPI for Clear Lake Optics Corp is 1679767339, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-14.