Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

John Kornowski

Counseling Psychologist in Saline, MI · enumerated 2017.

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

National Provider Identifier

1821534553

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Registry record

Entity type Individual (Type 1)

Name John Kornowski

Sex Male

Practice address Saline, MI, 48176

Phone (734) 693-3200

Enumeration date Jan 19, 2017

Last updated in NPPES Jan 19, 2017

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103TC1900X Counseling Psychologist Behavioral Health & Social Service Providers · License 6301009085 (MI) 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 1821534553 active?

Yes, as of the latest NPPES snapshot, NPI 1821534553 is active (record last updated 2017-01-19).

How do I verify John Kornowski's NPI record?

Cross-check NPI 1821534553 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 2017-01-19.