Phyllis Tien, MD, MSc

Dr. Tien is engaged in clinical translational research of chronic viral infections, specifically HIV and HCV, and their metabolic and inflammatory consequences on long term organ injury (e.g. liver, bone and vascular injury). As part of this work, she also studies novel non-invasive techniques to estimate steatosis and fibrosis using magnetic resonance (MR) imaging and ultrasound-based transient elastography as well as novel CT and MR imaging methods to measure bone and vascular injury. She is the Principal Investigator of an NIH funded R01 study to investigate the link between visceral adiposity, HIV, and HCV to the pathogenesis of hepatic steatosis and fibrosis and an NIH funded K24 award to mentor early career investigators to examine the effects of HIV/HCV coinfection on liver, bone and vascular injury. She is also one of three Principal Investigators of the Northern California site of the Women's Interagency HIV Study (WIHS), which is the largest and longest running prospective cohort of the progression of HIV infection in women in the US.

She serves as the Chair of the WIHS Executive Committee, Chair of the NIH AIDS Clinical Epidemiology Study Section, and is a member of the Department of Health and Human Services Antiretroviral Therapy Guidelines Panel for Adults and Adolescents and the national VA HCV treatment recommendations panel.

Dr. Tien earned an MD from UC San Diego and an MSc from Harvard School of Public Health. She completed an Internal Medicine Residency and a fellowship in Infectious Diseases and Geographic Medicine at Stanford University.