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University Gastroenterologists offers one of the most comprehensive programs in the Midwest to diagnose and treat the full spectrum of gastrointestinal (GI) diseases and disorders. Our multidisciplinary practice consists of some of the nation's top GI physicians, three interventional endoscopists, a specialized gastrointestinal dietitian and a gastrointestinal psychologist.​​

MEET OUR TEAM

A. Aziz Aadam, MD is an assistant professor of medicine in the Section of Gastroenterology and Nutrition. He received his medical degree from Rush University and completed his residency in internal medicine at Washington University in St. Louis - Barnes Jewish Hospital.  He then completed a gastroenterology fellowship at the Medical College of Wisconsin followed by a second fellowship in advanced therapeutic endoscopy at Northwestern University - Feinberg School of Medicine where he obtained specialized training in Endoscopic Ultrasound (EUS), complex biliary and pancreatic endoscopy (ERCP), endoscopic mucosal resection (EMR), and ablation (RFA) for early malignancy.  Aadam's clinical practice focuses on the role of therapeutic endoscopy in gastrointestinal malignancy, as well as pancreas and biliary disorders.  His research interests include tissue acquisition in endoscopic ultrasound and the efficacy of biliary and enteral stent placement.

 

Rana Abraham, MD, is an assistant professor of medicine in the Section of Gastroenterology and Nutrition. She received her MD from Saint Louis University and completed her residency in internal medicine at Rush University Medical Center and her fellowship in digestive diseases and nutrition at University of Illinois Medical Center. Abraham's clinical practice focuses on esophagus disorders and gastroesophageal reflux disease (GERD). Her research interest is on the effects of disrupted circadian on GI diseases, specifically GERD. ​

Michael D. Brown, MD, is a professor of medicine and director of the gastroenterology and hepatology fellowship program in the Section of Gastroenterology and Nutrition at Rush University Medical Center. He received his MD from the University of Illinois at Chicago and completed his internal medicine residency at Michael Reese Hospital and Medical Center and his gastroenterology fellowship at University of Chicago Medical Center/Michael Reese Hospital and Medical Center. Brown's clinical practice focuses on functional bowel disorders. His research interests include treatments for functional bowel disease. Brown also focuses on medical education.​

Keith Bruninga, MD, is an associate professor of medicine at Rush University Medicial Center.  He received his MD from the University of Illinois College of Medicine and completed his residency and gastroenterology fellowship at Loyola University Medical Center. Bruninga's clinical practice focuses on general gastroenterology and motility disorders. ​

Mark T. DeMeo, MD, is an associate professor of medicine and director of the Section of Gastroenterology and Nutrition at Rush University Medicial Center.  He received his MD from UMDMJ-Rutgers Medical School (Robert Woods Johnson Medical School); he completed his medicine residency at Michael Reese Medical Center and gastroenterology fellowship at Northwestern Medical Center. DeMeo's clinical practice focuses on celiac disease, immune mediated functional disease, and the effect of food intolerances on the GI tract. His research focuses on his clinical interests. He is the director of the Celiac Disease Clinic at Rush. ​

Sharon Jedel, PsyD, is an assistant professor at Rush University Medical Center, with a joint appointment in the Department of Behavioral Sciences. She received her PsyD from Yeshiva University, Ferkauf Graduate School of Psychology, in New York. She completed her psychology internship at Maimonides Medical Center in Brooklyn and post-doctoral fellowship in anxiety and traumatic stress at Weill Cornell Medical College/New York Presbyterian. Jedel’s clinical practice focuses on coping with chronic gastrointestinal diseases and illness as well as the impact of psychological symptoms, such as depression, anxiety and stress, on gastrointestinal illness. Her research interests include the relationship between psychosocial issues and interventions and gastrointestinal symptoms.

Ali Keshavarzian, MD, FRCP, FACP, FACG, AGAF, is a professor of medicine, pharmacology, and molecular biophysics & physiology at Rush University Medical Center. He received his MD from Tehran University in Iran. He did post-graduate training in London in general and chest medicine and gastroenterology, as well as a gastroenterology fellowship at the University of Maryland. Keshavarzian’s clinical practice focuses on inflammatory bowel disease, Crohn’s disease, ulcerative colitis, the impact of environmental factors on the gastrointestinal tract, complementary and alternative medicine on gastrointestinal diseases, and general gastroenterology.
 
Keshavarzian has several focus areas of research centered on intestinal inflammation and intestinal permeability and the intestinal microbiota (bacteria). These also include the role of circadian rhythms in human disease and mechanisms of alcohol and mental stress in GI, neurological and other organ systems' diseases. He has been one of the leading physicians in the US to promote a translational approach to medical research beginning in the early 1990s; this approach has included clinical, animal model, and in vitro cellular and molecular models of human disease. He has a history of outstanding medical and scientific accomplishments in each of these research areas, including co-authorship of 220 peer-reviewed articles, and has been funded by three different institutes at the NIH continuously since 1986.
 
Keshavarzian is the director of the Division of Digestive Diseases and the Josephine M. Dyrenforth Chair of Gastroenterology.

Jennifer Klaas, MSN, APN-BC, is an Advanced Practice Nurse in the Section of Gastroenterology and Nutrition at Rush University Medical Center. She received her undergraduate degree in nursing at the University of Wisconsin-Milwaukee and completed her master’s degree at Rush University College of Nursing. Klaas' clinical practice focuses on general gastroenterology and colorectal cancer screening.

Salina Lee, MD, is an assistant professor of medicine in the Section of Gastroenterology and Nutrition. She received her medical degree from the University of California, Irvine, and completed her residency in Internal Medicine at the Massachusetts General Hospital in Boston, Massachusetts. She completed her fellowship in Gastroenterology and Hepatology at John H. Stroger Jr. Hospital of Cook County in Chicago, Illinois. Lee's clinical focus is on colorectal disorders, colon cancer screening and surveillance, and advanced polypectomy. Her research interest is in colorectal cancer detection and prevention with an emphasis on quality and access, in particular, amongst the underserved minority population. ​

John Losurdo, MD, is an associate professor of medicine at Rush University Medical Center. He received his MD from UHS/The Chicago Medical School and completed his medicine residency and gastroenterology fellowship at Loyola University Medical Center. Losurdo's clinical practice focuses on interventional endoscopy, hepatobiliary system, pancreas, advanced therapeutics procedures, Barrett's esophagus, and colorectal cancer. His research focuses on endoscopic procedures, pancreas, and Barrett's. Losurdo is the director of endoscopy at Rush. ​

Joshua Melson, MD, is an assistant professor of medicine in the Section of Gastroenterology and Nutrition and medical director of the Sandra Rosenberg Registry for Hereditary and Familial Colon Cancer at Rush University Medical Center. He received his MD from Indiana University and a master’s degree in public health at the University of Minnesota. He completed his internal medicine residency and gastroenterology fellowship at Rush University Medical Center. Melson's clinic practice focuses on colorectal cancer, hereditary gastrointestinal syndromes, and endoscopic quality measures and screening. His research focus is on gastrointestinal cancers, including management and risk assessment in hereditary gastrointestinal cancers and cancer prevention.​

Sohrab Mobarhan, MD, FAGA, FACG, FACP, MACN, is a professor of medicine at Rush University Medical Center. He received his MD from University of Rome and completed his medicine internship at Jersey City Medical Center, medicine residency at University of Wisconsin and gastroenterology fellowships at both Lahey Clinic Foundation in Boston and at Tufts University. Mobarhan's clinical practice focuses on general gastroenterology and gastrointestinal cancer. His research interest is gastrointestinal cancer and nutrition. He is the director of the  Coleman Foundation Comprehensive Clinic for Gastrointestinal Cancers.​

Ece Mutlu, MD, MBA, MSCR, is an associate professor of medicine at Rush University Medical Center. She received her MD from Istanbul University and completed her medicine residency and gastroenterology fellowship at Loyola University Medical Center and Rush University Medical Center. Mutlu's clinical practice focuses on inflammatory bowel disease (IBD). Her research interest is clinical trials in IBD, alternative and complimentary treatments of IBD including dietary therapies and prebiotics, and the relationship to the microbiome. She is the director of GI Clinical Research and the IBD Program at Rush.​

David M. Shapiro, MD, is an assistant professor of medicine at Rush University Medical Center. He received his MD from the University of Nevada School of Medicine. He completed his medicine residency, gastroenterology/hepatology fellowship, and advanced fellowship in therapeutic endoscopy at Northwestern Memorial Hospital. Shapiro's clinical practice focuses on advanced endoscopic procedures, including ERCP, EUS, and luminal stenting, as well as disorders of the pancreatic and billiary systems.

Garth Swanson, MD, is an assistant professor of medicine in the Section of Gastroenterology and Nutrition at Rush University Medical Center. He received his MD from University of South Carolina and completed his internal medicine residency and gastroenterology fellowship at Rush University Medical Center. He also recieved his master's degree in clinical research at Rush University. Swanson's clinical practice focuses on inflammatory bowel disease, including ulcerative colitis and Crohn's disease. His research interests focus on the effects of alcohol on intestinal permeability and the impact of sleep and circadian disruption on GI function. Swanson is the assistant director of the gastroenterology and hepatology fellowship program at Rush.​

Services
Our practice offers specialty programs in the following areas:
  • Adult celiac disease
  • Gastrointestinal cancers
  • Inflammatory bowel disease (Crohn's disease and ulcerative colitis)
  • Interventional endoscopy

 

In addition to the above, we provide thorough diagnosis and treatment for patients with the following GI conditions:
  • Barrett's esophagus
  • Constipation
  • Diarrhea
  • Gastroesophageal reflux disorder (GERD)
  • Irritable bowel syndrome (IBS)
  • Motility disorders
  • Nutritional disorders
  • Pancreatic disorders

Photos And Videos

Accreditation and Recognition

University Gastroenterologists, Chicago
1725 W. Harrison St.
Professional Building II
Suite 207
Chicago, IL 60612
Phone: (312) 942-5861
Fax: (312) 942-2176
Driving Directions

University Gastroenterologists, Oak Park
610 S. Maple Ave.
Suite 2700
Oak Park, IL 60304
Phone: (312) 942-5861
Fax: (312) 942-7394
Driving Directions

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