Dr. John Kortenber
- Gender: Male
- Experience: 20 years
- Graduated from: University Of Missouri St Louis - School Of Optometry
- Graduation year: 2001
- Sole propriator: No
- NPI: 1821049586
Dr. John Kortenber OD
Optometrist
He is located at 112 North Thorington Street in Algona, IA 50511. Can help patients with the following: Astigmatism, Color Blindness, Dry Eyes, Esotropia, Exotropia, Retinal Imaging. His National Provider Identifier (NPI) number is 1821049586. Appointment can be made via the phone number (515) 395-3937. He is affiliated with 1 practices.
Conditions treated
Dr. John Kortenber, being an optometrist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. John Kortenber.
- Astigmatism
- Binocular Dysfunction (BVD)
- Blepharitis
- Blindness
- Cataracts
- Color Blindness
- Contact Lens Prescription and Fitting
- Crossed Eyes
- Diabetic Retinopathy
- Dry Eyes
- Esotropia
- Exotropia
- Eye Allergy
- Eye Floaters
- Eye Strain
- Eyeglasses Fitting and Prescription
- Farsightedness
- Glaucoma
- Hypertropia
- Lazy Eye
- Macular Degeneration
- Nearsightedness
- Oculomotor Dysfunction
- Pink Eye
- Presbyopia
- Retinal Imaging
- Sty
Procedures Performed by Dr. John Kortenber
Insurances Accepted by Dr. John Kortenber
- Medica HealthCare
- Medicare
Medicare Enrollment
Dr. John Kortenber is enrolled to bill Medicare as a Practitioner - Optometry .
Medicare practice location(s) (city/state/zip only, as reported to Medicare):
- SPENCER, IA, 51201
Bills through: John C. Kortenber Optometry Pc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and is not a comment on insurance accepted, quality, outcomes, or board certification.
Studies
UNIVERSITY OF MISSOURI ST LOUIS - SCHOOL OF OPTOMETRY
Graduated in 2001
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Questions & Answers
Does Dr. John Kortenber have affiliation with practices?
Dr. John Kortenber is affiliated with John C Kortenber Optometry.
What conditions does Dr. John Kortenber treat?
Dr. John Kortenber provides treatment for Astigmatism, Color Blindness, Dry Eyes, Esotropia, Exotropia, Retinal Imaging. For the full list see this list.
Where can you meet with Dr. John Kortenber?
Dr. John Kortenber's office is located at 112 North Thorington Street in Algona, IA 50511.
Does Dr. John Kortenber accept patients with Medicare?
Yes, Dr. John Kortenber accepts patients with Medicare.