About Mark E. Jonas, MD, FACG

Dr. Mark E. Jonas graduated with honors from the State University of New York Health Science Center at Brooklyn College of Medicine and completed his Residency in the prestigious Internal Medicine Department at the Montefiore Medical Center of the Albert Einstein College of Medicine. His Gastroenterology Fellowship was performed at the University of Medicine and Dentistry of New Jersey – New Jersey Medical School. Dr. Jonas completed an additional year of Fellowship in Hepatology and Liver Transplantation at the extremely busy Mount Sinai Medical Center in New York City. He is Board Certified in Gastroenterology. Dr. Jonas currently serves Jewish Hospital as its Director of Medical Education for Gastroenterology for the Residency program. Prior to moving to Cincinnati, Dr. Jonas was on the faculty at the University of Arizona College of Medicine as an Assistant Professor in both Medicine and Surgery and he managed all of the hepatic problems in the only liver transplant program for the State of Arizona.

Conditions & Procedures

  • Abdominal Pain
  • Acid Reflux & GERD
  • Colon Cancer Screening
  • Colorectal (Colon) Cancer
  • Constipation
  • Diarrhea
  • Hepatitis
  • Indigestion
  • Inflammatory Bowel Disease
  • Irritable Bowel Syndrome
  • Liver Disease
  • Capsule Endoscopy (Pill Cam)
  • Colonoscopy (Screening & Diagnostic)
  • EGD (Upper Endoscopy)
  • ERCP & Stents

Office Locations

Primary Location

Picture of the Clifton Office


2925 Vernon Pl.
Suite 100
Cincinnati, OH 45219

Phone: 513-751-6667
Fax: 513-872-4553

Additional Locations

Montgomery (8271)

8271 Cornell Rd.
Suite 730
Cincinnati, OH 45249

Phone: 513-936-0700
Fax: 513-792-4682




SUNY Downstate Health Sciences University - College of Medicine


Montefiore New Rochelle Hospital


Rutgers Robert Wood Johnson Medical School


Mount Sinai Hospital


Montefiore Medical Center

Professional Highlights


Board Certified in Gastroenterology