Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.

DR. GREGORY J DUFFNER, D.D.S.

Active

DR. GREGORY J DUFFNER, D.D.S. is a General Dentistry healthcare provider located in HOMEWOOD, Illinois. NPI 1225340375 is currently active in the NPPES registry. Verify at CMS.

General Dentistry · HOMEWOOD, IL

Registration Details

NPI Number: 1225340375
Provider Type: Individual
Gender: Male
NPI Issued: Jul 6, 2010 (16.080314726774 yrs)
Last Updated: Oct 23, 2025
License: 019-019782 (IL)

Practice Information

Address: 18040 PARK AVE

HOMEWOOD, IL, 604301606
Browse IL providers · Browse ZIP 60430
Phone: 7087922779
Fax: 7087986988
Primary Specialty: General Dentistry
1223G0001X

Other General Dentistry Providers in HOMEWOOD, IL

Name	Credential	NPI
DR. ANN E. MAZZOTTI	D.D.S.	1972551737
DR. EDWARD MICHAEL RUIZ	DDS	1992747810
DUANE EUGENE WOLFF	D.D.S.	1659463438
DR. DAVID DUANE MAYER	D.D.S.	1235295460
DR. WALTER DOUGLAS FLOR	DDS	1669520813
DR. THOMAS WALTON ERICKSON	DDS	1609994094

Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.