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DR. JOHN C KORTENBER OD
NPI 1821049586
Optometrist in Algona, IA

Active since May 15, 2006PECOS EnrolledAccepts Medicare Assignment
112 N THORINGTON ST, ALGONA, IA 50511(515) 395-3937(515) 395-3938 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. John C Kortenber Od NPPES

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

DR. JOHN C KORTENBER OD (NPI 1821049586) is an individual optometrist in Algona, Iowa, licensed in Missouri (2002014339) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Missouri St Louis - School Of Optometry (2001).

NPPES Registry Identity

NPI1821049586
Entity TypeIndividualMale
Primary Taxonomy152W00000X
Provider Legal NameDR. JOHN C KORTENBERCredential: OD
Location Address112 N THORINGTON STAlgona, IA 50511-2614
Mailing Address112 N Thorington StAlgona, IA 50511-2614 · (515) 395-3937 · Fax (515) 395-3938
Phone(515) 395-3937
Fax(515) 395-3938
Sole ProprietorNo
Medical School CMSUniversity Of Missouri St Louis - School Of OptometryGraduated 2001
Enumeration DateMay 15, 2006
Last NPPES UpdateMarch 7, 2023
✔ NPI 1821049586 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 MO · 2002014339
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.
112 N THORINGTON ST, Algona, IA 50511
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. John C Kortenber Od is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9032154182
PECOS Enrollment IDI20060601000041
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient problem focused exam of visual system 92012
This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.
285 services229 patients
Imaging of retina 92134
Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.
55 services54 patients
Imaging of optic nerve 92133
Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).
49 services48 patients
Exam of visual field with extended testing 92083
An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.
48 services47 patients
New patient problem focused exam of visual system 92002
A new patient problem-focused exam of the visual system is a basic evaluation of your eyes and vision. It includes checking your eye movements, visual acuity, and general eye health. It helps detect any potential issues early for timely treatment.
47 services47 patients
Removal of cataract with insertion of prosthetic lens 66984
This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.
34 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50511 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$122.23 typical visit price
range $52.96 – $161.40
Typical copayment $30.55 (range $13.24 – $40.35)
Most-billed visit code 99204
Established Patient
$66.36 typical visit price
range $16.91 – $131.98
Typical copayment $16.59 (range $4.22 – $32.99)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JOHN C. KORTENBER OPTOMETRY PC
Optometrist
112 N THORINGTON ST
ALGONA, IA 50511
Kossuth County (515) 395-3937

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 John Kortenber's NPI number?

The NPI number for John Kortenber is 1821049586. It was assigned to this individual provider in the NPPES registry on May 15, 2006.

Where is John Kortenber located?

John Kortenber practices at 112 N Thorington St, Algona, IA 50511. The listed phone number is (515) 395-3937.

What is John Kortenber's specialty?

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

Is John Kortenber enrolled in Medicare?

Yes. John Kortenber is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does John Kortenber accept?

Health plans from Medica and Providence Health Plan list John Kortenber 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 John Kortenber was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.