Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory James Horwitz, M.D.

Urology Physician in North Kansas City, MO · enumerated 2007 · practices at Kansas City Urology Care, P.A..

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

National Provider Identifier

1689798613

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Registry record

Entity type Individual (Type 1)

Name Gregory James Horwitz

Credential M.D.

Sex Male

Practice address 1950 Diamond Pkwy Ste 200, North Kansas City, MO, 64116

Phone (816) 842-6717

Enumeration date Mar 16, 2007

Last updated in NPPES Apr 12, 2021

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 33000 (KS) Secondary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 2008004272 (MO) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
41567017	Other	MO	BCBS KC

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1689798613 active?

Yes, as of the latest NPPES snapshot, NPI 1689798613 is active (record last updated 2021-04-12).

How do I verify Gregory Horwitz's NPI record?

Cross-check NPI 1689798613 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 2021-04-12.