Christopher Bowlus, M.D.
Professor and Chief 

       Dr. Bowlus’ research focuses on 2 areas; autoimmune liver diseases including Primary Sclerosing Cholangitis (PSC) and Primary Biliary Cirrhosis/Cholangitis (PBC) and Chronic Hepatitis B (CHB). His studies include translational investigations of the immunologic and genetic basis of PSC and PBC as well as clinical trials of new therapies. He also directs the Studies of Primary Sclerosing Cholangitis (STOPSC) DNA bank, a multi-institutional resource for research into the genetic basis of PSC. His work in CHB has been aimed at understanding and overcoming health disparities in Asian Americans with CHB as well as the molecular basis of disparities in hepatocellular carcinoma among Asian ethnic groups, including Vietnamese, Chinese, and Hmong.

Valentina Medici, M.D.
Associate Professor

Dr. Medici's research focuses on Wilson disease, methionine metabolism, and DNA methylation; epigenetic mechanisms of
gene expression regulation; alcoholic liver disease and nutrition; disease outcomes in different ethnicities.

Sooraj Tejaswi, M.D., M.S.P.H
Associate Professor
ACGME Fellowship Program Director

Dr. Tejaswi's research includes GI health issues among South Asians (colorectal cancer, polyps, NASH); cholangioscopy
and newer techniques in ERCP (endoscopic retrograde cholangiopancreatography); colonoscopy methods aimed at
increased adenoma detection rates.

Shiro Urayama, M.D.
Advanced Endoscopy Program Director

Dr. Urayama’s research includes translational endoscopic research with clinical sample/data based early pancreatic tumor marker identification using various biological approaches. Endoscopically obtained primary pancreatic cancer cell analyses with in vitro and in vivo models are currently investigated. Another research focus is the application of novel endoscopic diagnostic and therapeutic methodologies in benign and malignant gastrointestinal diseases.

Souvik Sarkar, M.D., Ph.D.
Assistant Professor

Dr. Sarkar is interested in new therapeutics and clinical trials for patients with fatty liver diseases and chronic hepatitis C. His academic interests are understanding and establishing the best methodologies for early screening and linkage to care for patients with chronic hepatitis C. He also remains active in establishing novel imaging methodology for the diagnosis of liver inflammation in patients with fatty liver disease.

Eric Chak, M.D., M.P.H.
Assistant Professor

Dr. Chak’s research relates to decreasing disparities in screening for chronic hepatitis B and liver cancer among Asian Americans.  In addition, he is actively working on improving health care outcomes for patients with liver cirrhosis.

Contact Information

For further information or to set up a meeting with current research faculty, please contact:

Tiffany Wallace
Education Coordinator