Research Faculty

The Division of Digestive Diseases and Nutrition is led by Irving Waxman, MD, who works with his research team of Rush physician scientists, clinician investigators and scientists to investigate and expand knowledge of disease mechanisms and improve patient care.

Please click on each research faculty member’s name below to view their profile.

Physician scientists

Ali Keshavarzian, MD

  • Director, Institute for Advanced Study of the Gut, Chronobiology and Inflammation
  • Investigates GI intestinal barrier and gut microbiota and how these are impacted by the Western lifestyle including: alcohol, stress, Circadian rhythms and sleep.
  • Investigates how “leaky gut” and dysbiosis promote inflammation-mediated diseases such as IBD, IBS, allergic disorders, colon cancer, HIV, hepatic (nonalcoholic steatohepatitis, alcoholic steatohepatitis) disease, as well as disorders associated with neuroinflammation (Parkinson’s disease).
  • Preventive treatments of GI disorders with prebiotics and probiotics
  • Publications

Rana Abraham, MD, MS

  • Circadian rhythms, gastroesophageal reflux disease , constipation and esophageal motility disorders
  • Publications

Costica Aloman, MD

Faraz Bishehsari, MD, PhD

  • GI cancers (colon cancer and pancreatic adenocarcinomas) and how these are impacted by the modern lifestyle including: abnormal food timing, circadian rhythms, diet and alcohol.
  • Publications

Joshua Melson, MD, MPH

  • Director, GI Cancer Clinic
  • Colon cancer, GI cancer prevention and screening
  • Publications

Ece A. Mutlu, MD, MS, MBA

  • Director of Clinical Research
  • Director of Safety & Quality
  • Diet, microbiota, prebiotics, IBD, Crohn’s disease, Ulcerative Colitis, IBS, GI cancer, breast cancer, complementary and alternative medicines for IBD, and air pollution; well-versed in bioinformatics and statistics.
  • Publications

Ioannis Oikonomou, MD

  • Director of GI Clinical Trial Program
  • Colitis, Crohn’s disease, Inflammatory bowel disease, Microscoic colitis, Pouchitis, Ulcerative colitis

Nancy Reau, MD

  • Section Chief, Hepatology
  • Associate Director of Organ Transplantation
  • Richard B. Capps Chair of Hepatology
  • Liver cancer, Hepatitis B and C, liver disease, liver cirrhosis and liver transplant
  • Publications

Garth Swanson, MD, MS

  • Director, Rush Center for Crohn’s and Colitis
  • Medical Director, the Center for Clinical Chronobiology
  • Alcohol, circadian rhythms, intestinal permeability, GI inflammation, IBD and IBS
  • Publications

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Clinician investigators

Michael Brown, MD, MACM

  • Director of the GI and Hepatology Fellowship Program
  • Functional bowel disorders and colonoscopy quality measures and preparations
  • Publications

Keith Bruninga, MD

Mark T. DeMeo, MD

  • Section Chief, Gastroenterology
  • Director of the Celiac Disease Clinic
  • Celiac disease, food allergy, breath hydrogen and endoprotease
  • Publications

Sheila Eswaran, MD, MS

  • Liver Cancer, Adult Liver Disease, Liver Transplant, Psychosocial Aspects of Liver Disease
  • Publications

Shriram Jakate, MD

Sujit Janardhan, MD, PhD

  • Alcoholic Liver Disease, Autoimmune Hepatitis, Liver Cirrhosis, Liver Cancer
  • Publications

Sharon Jedel, PsyD

  • Anxiety, depression, IBS, IBD, stress, health psychology and coping with GI disorders
  • Publications

Donald M. Jensen, MD

  • Clinical trials of newer agents for hepatitis C therapy, outcomes of patients with liver conditions
  • Publications

Salina Lee, MD

  • Colon cancer, GI cancer prevention and detection
  • Publications

John Losurdo, MD

  • Director of Endoscopy
  • Pancreaticobiliary disorders, reflux, Barrett’s and colon cancer, and primary investigator for the GI repository
  • Publications

Nikunj Shah, MD

  • Alcoholic liver disease, autoimmune hepatitis, liver cancer, hepatitis B and C, liver disease, liver cirrhosis and liver transplant
  • Publications

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Helen Burgess, PhD

  • Director, Biological Rhythms Laboratory
  • Director, the Center for Clinical Chronobiology
  • Alcohol, circadian rhythms, light, melatonin and sleep disruption
  • Publications

Martha Clare Morris, ScD

  • Director, Section of Nutritional Epidemiology and Nutrition
  • Aging, cognition, diet, epidemiology and nutrition
  • Publications

Christopher Forsyth, PhD

  • Director, Basic Research Laboratory
  • Alcohol, cancer, circadian rhythms, gut-brain axis and IBD
  • Publications

Robin Voigt-Zuwala, PhD

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