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

DR. GERALD JAY OSHER, M.D.

Active Sole Proprietor

DR. GERALD JAY OSHER, M.D. is a Internal Medicine healthcare provider located in BANNOCKBURN, Illinois. NPI 1326056136 is currently active in the NPPES registry. Verify at CMS.

Internal Medicine · BANNOCKBURN, IL

Registration Details

NPI Number: 1326056136
Provider Type: Individual
Gender: Male
NPI Issued: Aug 4, 2006 (20.042369502221 yrs)
Last Updated: Dec 19, 2025
License: 036066116 (IL)
Sole Proprietor: Yes

Practice Information

Address: 2101 WAUKEGAN RD STE 200

BANNOCKBURN, IL, 600151800
Browse IL providers · Browse ZIP 60015
Phone: 8473171717
Fax: 8473179305
Primary Specialty: Internal Medicine
207R00000X

Other Internal Medicine Providers in BANNOCKBURN, IL

Name	Credential	NPI
DR. NED I ZALLIK	M.D.	1760477889
DR. LARRY SAMUEL KASKEL	MD	1285620484
JILL FRANCES APEL	M.D.	1356662902
SABRINA JONES	M.D.	1518371889
DR. BRENT M NATHAN	MD	1639559719
DEEPANJALI JAIN	MD	1477114064

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.