Members of our premier gastroenterology practice

Awards, Honors & Firsts

  • Huron Hospital Outstanding Teacher Award - 2008, 2009, 2010 presented to Dr. Kamionkowski for excellence in clinical teaching activities to the medical residents
    International Association of Healthcare Professionals Award 2011 "Leading Physician of the World & Top Gastroenterologist in Cleveland, Ohio presented to Dr. Frankel
  • Patient's Choice Award 2008, 2010 - Dr. Frankel was selected as one of Ohio's favorite physicians
  • Northern Ohio Live, April 2005 - Dr. Frankel judged by 3,000 physicians in Northeast Ohio as top gastroenterologist in Cuyahoga County
  • Guide to Americas Top Physicians Magazine 2003 and 2009 editions - Dr. Frankel names as one of the top gastroenterologists in the country
  • Public Service Achievement Award in 2003 - was presented to Dr. Lissauer for providing outstanding healthcare service to the NASA Glenn Research Center employees.
  • Crohn's Colitis Foundation Association Premier Physician Award, 1995 - presented to Dr. Kamionkowski for his contribution to the treatment and care of patients with Inflammatory Bowel Disease
  • Department of Veterans Affairs in 1992 - presented a commendation to Dr. Lissauer for his outstanding clinical excellence and teaching abilities to the residents and fellows.
  • The Mortimer Siegel, MD Award in 1985 - was conferred on Dr. Lissauer in recognition of his outstanding contribution to the advancement of medical education at The Mt. Sinai Medical Center
  • 1990 First Free-Standing Physician Owned Endoscopy Center Opened - after months of research, the physician owners of GAC completed construction on a 2 procedure room endoscopy center with 5 admit/recovery beds.
  • 1993 Only GI Private Practice performing Clinical Research
  • 2005 First In-House Pathology Laboratory in a Gastroenterologists' Office - after many months of planning. The physicians began operation of their own anatomic pathology laboratory with a full-time GI trained pathologist on staff.


Our Doctors

As the premier gastroenterology practice in the Greater Cleveland area, our physicians offer the knowledge and experience valued by patients who are suffering from digestive problems and liver disease. From the most common stomach ailments to the most serious gastrointestinal issues, our Board Certified specialists are highly skilled in evaluating and treating every type of liver and digestive disorder.
To make an appointment with one of our physicians - CLICK HERE

Dr. Jack S. Lissauer, M.D.

Born in Baltimore, Maryland, Dr. Lissauer earned his undergraduate degree from the University of Maryland in College Park, Maryland. He earned his medical degree at the University of Maryland School of Medicine

He completed his internship and residency at the University of Chicago Hospital and Clinics in Chicago, Illinois. Moving to Cleveland, Ohio, Dr. Lissauer entered the fellowship training program in gastroenterology at the Cleveland Clinic Foundation between 1974 and 1976. Immediately upon graduation, he joined Gastroenterology Associates of Cleveland. For many years, Dr. Lissauer was an attending physician teaching in the gastroenterology fellowship program at Mt. Sinai Hospital and the Veterans Administration Hospital in Cleveland, Ohio. In 1992, Dr. Lissauer received a commendation from the Department of Veterans Affairs for his clinical excellence and outstanding abilities as a teacher. Again, in 2003, Dr. Lissauer received a Public Service Achievement Award for providing outstanding healthcare service to the National Aeronautics and Space Administration’s Glenn Research Center employees.

Dr. Lissauer has interests in the following gastrointestinal problems:
  • Crohn’s Disease and Ulcerative Colitis
  • Chronic Hepatitis C
  • Irritable Bowel Syndrome
  • Colon Cancer Screening
  • Gastroesophageal Reflux Disease and Erosive Esophagitis
  • Abdominal Pain
  • Diarrhea

An avid collector of contemporary art, Dr. Lissauer is responsible for the current selection of art hanging throughout our office, many from his personal collection.
Dr. Jack S. Lissauer, M.D.

Dr. Michael H. Frankel, M.D.

A Cleveland native, Dr. Frankel completed his undergraduate studies at the University of Pittsburgh graduating Magna Cum Laude and was inducted into Phi Beta Kappa. He graduated Cum Laude from The Ohio State University College of Medicine in Columbus, Ohio. He went on to complete his internship and residency in internal medicine at Washington University Barnes Hospital in St. Louis, Missouri.

Returning to Cleveland, Dr. Frankel completed his fellowship in gastroenterology through the Case Western Reserve University combined University Hospitals and the Cleveland VA Hospital Program.

Currently, Dr. Frankel is Chief of the Division of Gastroenterology at Hillcrest Hospital in Mayfield Heights, Ohio. Under his leadership the GI Division was recognized by U.S. News and World Report as one of the top 50 in the country. He is the immediate past Chief of Staff of the Hillcrest Hospital Medical Staff and serves as the Hillcrest Hospital medical Staff representative to the Ohio State Medical and American Medical Associations. Throughout his career, he has received numerous honors and awards as one of the top gastroenterologists in the greater Cleveland area and the United States. He serves on many charitable and medical advisory boards.

Dr. Frankel has interests in the following gastrointestinal problems:
  • Crohn’s Disease and Ulcerative Colitis
  • Gastroesophageal Reflux Disease
  • Irritable Bowel Syndrome
  • Diarrhea and Constipation
  • Colon Polyps and Colorectal Cancer
  • Colonoscopy, Upper Endoscopy and Advanced Therapeutic Endoscopy
Dr. Michael H. Frankel, M.D.

Dr. David J. Weinerman, MD

A native of Columbus, Ohio, Dr. Weinerman graduated from The Ohio State University College of Medicine and Public Health. Following medical school, Dr. Weinerman continued his training in internal medicine through internship and residency at MetroHealth Medical Center/Case Western Reserve University.  He then specialized in gastroenterology and completed his fellowship at the Gastroenterology and Hepatobiliary Disease Division of the New York Medical College. His research topics have included evaluating diagnostic tests related to pancreatic cystic lesions and physician practices related to the management of patients with Hepatitis C.

Dr. Weinerman has interests in the following gastroenterology problems;

. Inflammatory Bowel Disease (IBD)
. Colon Cancer Screening
. Gastroesophageal Reflux Disease (GERD)
. Chronic Hepatitis C
. Irritable Bowel Syndrome (IBS)
. Fatty Liver Disease
. Therapeutic Endoscopy, Colonoscopy and Upper Endoscopy

Dr. Weinerman and his family are excited to be back in Cleveland. You might find him jogging along the trails in Beachwood and Shaker Heights or playing tennis with his family at any of the local courts.

Dr. David J. Weinerman, MD