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Drs. Kreuz and Duffner, DDS, Ltd.

General Practice Dentistry in Homewood, IL · enumerated 2007 · authorized official Gregory Duffner, Dentist.

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

National Provider Identifier

1235283821

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Registry record

Entity type Organization (Type 2)
Legal business name Drs. Kreuz and Duffner, DDS, Ltd.
Practice address 18040 Park Ave, Homewood, IL, 60430
Phone (708) 798-6868
Fax (708) 798-6988
Enumeration date Jan 22, 2007
Last updated in NPPES Sep 23, 2008

Taxonomy & classification

1223G0001X General Practice Dentistry Dental Providers · License 019019782 (IL) Primary

Authorized official

Name Gregory Duffner
Title Dentist
Phone (708) 798-6868

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 current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-09-23. Verify at npiregistry.cms.hhs.gov.
Where is Drs. Kreuz and Duffner, DDS, Ltd. located?
The practice location on file with NPPES is in Homewood, IL.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-23.