Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Knapper, ATC, LAT

Athletic Trainer in Mason City, IA · enumerated 2018.

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

National Provider Identifier

1174091151

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Registry record

Entity type Individual (Type 1)

Name John Knapper

Credential ATC, LAT

Sex Male

Practice address 1501 4th St Sw, Mason City, IA, 50401

Phone (641) 428-6648

Fax (641) 428-6484

Enumeration date Nov 7, 2018

Last updated in NPPES Nov 7, 2018

Taxonomy & licenses

2255A2300X Athletic Trainer Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 079138 (IA) Primary

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

Is NPI 1174091151 active?

Yes, as of the latest NPPES snapshot, NPI 1174091151 is active (record last updated 2018-11-07).

How do I verify John Knapper's NPI record?

Cross-check NPI 1174091151 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-07.