Browse Health
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Gregg Cohan:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

View full profile

Patient Reviews

Patient comments (1)

The overall average patient rating of Dr. Gregg Cohan is Excellent. Dr. Cohan has been reviewed by 2 patients who have provided 1 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 5.0
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Gregg Cohan, MD is board certified in Internal Medicine and Pulmonary Disease.

  • He has special expertise in 6 areas:
  • Asthma
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Emphysema
  • Lung Cancer
  • Pulmonary Fibrosis
  • Sarcoidosis

Education & Awards

Dr. Cohan graduated from University of Chicago.


Dr. Cohan has 6 hospital affiliations:

  • Silver Cross Hospital 
  • Morris Hospital 


  • English

> > > > Dr. Gregg Cohan, MD

Similar doctors nearby

Dr. Glenda Flemister

Internal Medicine
38 years experience
Joliet, IL

Dr. Basant Jhawar

Internal Medicine
34 years experience
Joliet, IL

Dr. Joel See

Internal Medicine
9 years experience
Joliet, IL

Dr. Brian Ragona

Internal Medicine
29 years experience
Joliet, IL

Dr. Robert Schubert

Internal Medicine
24 years experience
Joliet, IL

Dr. Atul Gupta

Internal Medicine
14 years experience
Joliet, IL
Search All Similar Doctors
Additional Information
Dr. Gregg R Cohan MD is a male Internist, has 26 years of experience and practices in Internal Medicine and Pulmonary Disease.
Where does Dr. Gregg R. Cohan practice?
Dr. Gregg Cohan has 1 office location.
Dr. Gregg Cohan practices Internal Medicine and Pulmonary Disease near Joliet, IL.
See Joliet Internists and Joliet Pulmonologists.