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MICHAEL L KORTHALS
NPI 1679767339
Optometrist in Mason City, IA

Active since September 05, 2007
422 S PIERCE AVE STE 100A, MASON CITY, IA 50401(641) 424-0780(641) 424-2345 Get Directions Write a Review

NPPES record last updated: December 14, 2023. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Michael L Korthals NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL L KORTHALS (NPI 1679767339) is a healthcare organization registered as an optometrist in Mason City, Iowa and active in the NPI registry since September 2007. The organization lists Mike L Korthals, Owner, as its authorized official.

NPPES Registry Identity

NPI1679767339
Entity TypeOrganization
Primary Taxonomy152W00000X
Legal Business NameCLEAR LAKE OPTICS CORP
Location Address422 S PIERCE AVE STE 100AMason City, IA 50401-2709
Mailing Address422 S Pierce Ave Ste 100aMason City, IA 50401-2709 · (641) 424-0780 · Fax (641) 424-2345
Phone(641) 424-0780
Fax(641) 424-2345
Organization SubpartNo
Authorized OfficialMike L KorthalsOwner · (641) 424-0780
Enumeration DateSeptember 5, 2007
Last NPPES UpdateDecember 14, 2023
NPPES CertifiedDecember 14, 2023
✔ NPI 1679767339 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in IA · 02146
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
422 S PIERCE AVE STE 100A, Mason City, IA 50401
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Other Names 1

Doing Business AsMichael L Korthals

Other Identifiers 3

OtherDB8928IA · Railroad Medicare
Medicaid1204016IA
Other35096IA · Blue Cross Blue Shield

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and more.Insurance ›

Medical Equipment Supplier Medicare DMEPOS 2

Medicare supplier enrollment and the product categories Dr Korthals And Associates carries, from the Medicare DMEPOS supplier directory.

Dr Korthals And Associates

DMEPOS supplier · Mason City, IAOperated by Clear Lake Optics Corp
✔

Accepts Medicare assignment

Dr Korthals And Associates agrees to accept the Medicare-approved amount as full payment for covered equipment and supplies. Medicare patients are not billed beyond the standard deductible and coinsurance.

PTAN (Medicare Supplier Number)20587379
Medicare Participant SinceJuly 29, 2004
Supplier Location422 S Pierce Ave Ste 1Mason City, IA 50401
Phone(641) 424-0780
Supplier Specialties
Optometrist

Medicare Product Categories

Prosthetic Lenses: Conventional Eyeglasses
Conventional Eyeglasses
Prosthetic Lenses: Conventional Contact Lenses
Conventional Contact Lenses
Product categories are from the Medicare DMEPOS supplier directory. Contact the supplier to confirm current availability of specific items.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Clear Lake Optics Corp's NPI number?

The NPI number for Clear Lake Optics Corp is 1679767339. It was assigned to this organization in the NPPES registry on September 5, 2007. The provider is doing business as Michael L Korthals.

Where is Clear Lake Optics Corp located?

Clear Lake Optics Corp is located at 422 S Pierce Ave Ste 100A, Mason City, IA 50401. The listed phone number is (641) 424-0780.

What is Clear Lake Optics Corp's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Does Clear Lake Optics Corp accept Medicare assignment for medical equipment?

Yes. As a Medicare medical equipment supplier, Dr Korthals And Associates accepts Medicare assignment: the supplier accepts the Medicare-approved amount as payment in full for covered equipment and supplies.

What insurance does Clear Lake Optics Corp accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Home State Health, Ambetter from NH Healthy Families and Ambetter from Sunflower Health Plan and 1 other insurer list Clear Lake Optics Corp as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Clear Lake Optics Corp was last updated on December 14, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.