Tien S. Dong, MD, PhD

Tien S. Dong, MD, PhD

Hepatology| Gastroenterology
Accepting new patients
Primary Location
Santa Monica Digestive Diseases
1223 16th Street
Suite 3100
Santa Monica, California 90404


Dr. 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. Dr. Dong is board certified in internal medicine and gastroenterology.

Dr. Dong's 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.




Medical Board Certifications

Internal Medicine, American Board of Internal Medicine
Gastroenterology, American Board of Internal Medicine, 2020


Gastroenterology & Hepatology, University of California Los Angeles, 2020


Internal Medicine, University of Chicago Pritzker School of Medicine, 2015


MD, University of Chicago Pritzker School of Medicine, 2012

Hospital Affiliations

UCLA Santa Monica Medical Center

Areas of Focus

Chronic liver disease
Fatty liver
Autoimmune hepatitis
Alcoholic liver disease