John M. Vierling MD, FACP, FAASLD, AGAF is a tenured Professor of Medicine and Surgery and Chief of Hepatology and Director of Baylor Liver Health at the Baylor College of Medicine in Houston, Texas. He also serves as Director of Advanced Liver Therapies (a clinical research unit) and Program Director of the Hepatology and Liver Transplantation Fellowship. 

He graduated from Stanford University with a degree in Biology with Great Distinction and received his M.D. degree from Stanford University School of Medicine. He was a Clinical Associate in the Liver Unit at NIH prior to completing a Gastroenterology Fellowship at UC, San Francisco. He was the founding Medical Director of Liver Transplantation for programs at the University of Colorado School of Medicine and at Cedars-Sinai/UCLA. 

Clinical interests include autoimmune and alloimmune liver diseases, liver transplantation, acute liver failure, viral hepatitis, non-alcoholic fatty liver disease, Wilson disease and drug-induced liver injury (DILI). His translational research interest is immunologic mechanisms of hepatobiliary injury. He has authored over 275 manuscripts, reviews and chapters. He is co-editor of Liver Immunology: Principles and Practice, now in its 3rd edition. Honors include Phi Beta Kappa, Alpha Omega Alpha, Best Doctors in America for the past 20 years, Top 1% physician rating by U.S. News and World Report, Who’s Who in America, Who’s Who in the World, Who’s Who in Science and Engineering, Who’s Who in Healthcare and the Albert Nelson Marquis Lifetime Achievement Award. He serves on the NIH NIDDK Liver Tissue and Cell Distribution System Coordinating Committee and on the DILI Network’s DSMB. He was previously President of the American Association for the Study of Liver Diseases, Secretary-Treasurer of Digestive Disease Week® and Chairman of the National Board of Directors of the American Liver Foundation.