He works as Chairman and Professor in Section of Gastroenterology, Department of Medicine, Aga Khan University (Karachi, Pakistan). He completed a fellowship in the Hepatology of Liver Unit at Southwestern Medical School, University of Texas. He also completed a clinical research fellowship in Gastroenterology at John Radcliffe Hospital / University of Oxford, and was a senior registrar in Gastroenterology of West Middlesex University Hospital, and registrar in Gastroenterology of the Royal Infirmary.