John Stelios Leventis

John Stelios Leventis is a healthcare organization registered as Internal Medicine Physician in Gurnee, IL, holding Type 2 (organization) NPI 1669833539 since 2016. The authorized official on file is John Leventis, Physician/Owner.

✓ Active NPI ✓ Valid NPI checksum

NPI	1669833539
Entity type	Organization (Type 2)
Legal business name	John Stelios Leventis
Practice address	35 TOWER CT STE I, Gurnee, IL, 60031
Phone	8472444446
Fax	8472444445
Enumeration date	2016-03-18
Last updated in NPPES	2016-03-18

Authorized official

Name	John Leventis
Title	Physician/Owner
Phone	8472444446

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
207R00000X	Internal Medicine Physician	Primary	036089868	IL

Copy-ready billing details

Provider: John Stelios Leventis
NPI: 1669833539
Taxonomy: 207R00000X (Internal Medicine Physician)
Address: 35 TOWER CT STE I, Gurnee, IL, 60031

Verify this record

Cross-check NPI 1669833539 against the authoritative CMS record: view John Stelios Leventis on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2016-03-18. Verify at npiregistry.cms.hhs.gov.

Where is John Stelios Leventis located?

The practice location on file with NPPES is in Gurnee, IL.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2016-03-18.