John C. Kortenber Optometry PC
NPI 1134172430 · Optometrist · Algona, IA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John C. Kortenber Optometry PC is a Optometrist organization in Algona, IA (NPI 1134172430).
Provider details
- NPI number
- 1134172430
- Entity type
- Organization
- Primary specialty
- OptometristEye and Vision Services Providers
- Organization subpart
- No
- Authorized official
- John Kortenber, President(515) 395-3937
- License
- 02341 (IA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-18
- Last updated
- 2023-03-07
Frequently asked questions
- What is John C. Kortenber Optometry PC's NPI number?
- John C. Kortenber Optometry PC's National Provider Identifier (NPI) is 1134172430, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John C. Kortenber Optometry PC?
- John C. Kortenber Optometry PC is classified in the NPPES registry as Optometrist (Eye and Vision Services Providers).
- Where is John C. Kortenber Optometry PC located?
- John C. Kortenber Optometry PC's practice location on file with NPPES is 112 N Thorington St, Algona, IA 50511-2614.
- What is John C. Kortenber Optometry PC's phone number?
- The practice phone number listed in the NPPES registry for John C. Kortenber Optometry PC is (515) 395-3937.
- Does John C. Kortenber Optometry PC accept Medicare?
- John C. Kortenber Optometry PC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for John C. Kortenber Optometry PC?
- The authorized official listed on John C. Kortenber Optometry PC's NPPES record is John Kortenber, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John C. Kortenber Optometry PC's NPI active?
- Yes — John C. Kortenber Optometry PC's NPI (1134172430) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.