Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John P Kolnik, D.O.

Gastroenterology Physician in Haddon Heights, NJ · enumerated 2005.

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

National Provider Identifier

1902894496

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Registry record

Entity type Individual (Type 1)

Name John P Kolnik

Credential D.O.

Sex Male

Practice address 217 White Horse Pike, Haddon Heights, NJ, 08035

Phone (856) 547-1661

Fax (856) 547-6117

Enumeration date Oct 10, 2005

Last updated in NPPES Feb 23, 2026

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 25MB06094100 (NJ) Secondary

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 25MB06094100 (NJ) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
727420303	Medicaid	NJ	-

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

How do I verify John Kolnik's NPI record?

Cross-check NPI 1902894496 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1902894496 active?

Yes, as of the latest NPPES snapshot, NPI 1902894496 is active (record last updated 2026-02-23).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-23.