Dr. John Roberts is a surgeon with expertise that includes kidney, liver and pancreas transplants. He is also an expert in surgically managing liver diseases, such as portal hypertension (high blood pressure in the vein going from the digestive organs to the liver), as well as in liver surgery for cancer. Roberts is one of the few surgeons in the U.S. who has extensive experience in performing the Rex shunt – a procedure that restores normal blood flow to the liver – in children and adults. He also has spearheaded an effort to expand the use of living donors for liver transplantation, one of his many projects to make more organs available. Roberts earned his medical degree at the University of California, San Diego and completed a surgical residency at the University of Washington. He also served as a postdoctoral fellow in transplantation in the Department of Surgery at the University of Minnesota Medical School. Roberts joined UCSF Medical Center in 1988. In addition to his leadership of the transplant service, he teaches medical students and supervises the training of surgical residents. Roberts has won numerous awards and has received grants from the National Institutes of Health for his research. He has produced nearly 170 papers on topics that include organ transplant rejection, immunogenicity (ability of a substance to provoke an immune response) and immunosuppression (intentionally subduing immune response to lower the chance of organ rejection). Roberts speaks nationally on transplant issues. He is a fellow of the American Surgical Association and a member of many professional organizations.