Internist, Gastroenterologist (digestive), Hepatologist
21 years of experience
Video profile
Accepting new patients
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).

Patient Reviews

Patient comments (2)

The overall average patient rating of Dr. Mark Jonas is Good. Dr. Jonas has been reviewed by 15 patients who have provided 2 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 4.1
Promptness 4.6
Courteous Staff 4.4
Accurate Diagnosis 4.7
Bedside Manner 5.0
Spends Time with Me 4.8
Follows Up After Visit 4.3

Specialties & Research

Dr. Mark Jonas, MD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 5 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Jonas graduated from State University of New York Downstate, Brooklyn.


Dr. Jonas has 17 hospital affiliations:

  • Bethesda North Hospital 
  • The Christ Hospital 


  • German

> > > > Dr. Mark Jonas, MD

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Additional Information
Dr. Mark Edward Jonas MD is a male Internist, has 21 years of experience and practices in Internal Medicine, Gastroenterology, and Hepatology.
Where does Dr. Mark E. Jonas practice?
Dr. Mark Jonas has 7 office locations.
Dr. Mark Jonas practices Internal Medicine, Gastroenterology, and Hepatology near Cincinnati, OH.
Additional practice locations include: Blue Ash, OH and Mason, OH.
See Cincinnati Internists, Cincinnati Gastroenterologists, and Cincinnati Hepatologists.