Dr. Tien S. Dong graduated with distinction from Stanford University with a BS in biological sciences. He subsequently received his MD from the University of Chicago. He completed his internal medicine residency at the University of Chicago, where he stayed on as faculty for an additional year as a liver hospitalist. While at the University of Chicago, he trained in the laboratory of Dr. Eugene Chang where he investigated the role of the gut microbiome on microRNAs and colon cancer. He then joined UCLA as a gastroenterology fellow in 2016 and continued his research training at UCLA through the Specialty Training and Advanced Research (STAR) program under the mentorship of Dr. Joseph Pisegna and Dr. Jonathan P. Jacobs. He finished his PhD in molecular, cellular, and integrative physiology in 2020. His research interest involves machine learning and how the intestinal microbiome influences the development of obesity, metabolic syndrome, chronic liver disease, cirrhosis, and hepatocellular carcinoma. He is currently the director of the Goodman-Luskin Microbiome Center Biorepository Core. His clinical interests include cirrhosis, hepatitis B, hepatitis C, alcoholic liver disease, autoimmune hepatitis, and other chronic liver diseases.