Searching Hepatology Clinic in Pune ? Hepatology is the study of diseases of the liver. A hepatologist is a doctor specializing in the field of medicine which involves diseases of the liver. Hepatology is the branch of medicine that incorporates the study of liver, gallbladder, biliary tree, and pancreas as well as management of their disorders. Although traditionally considered a sub-specialty of gastroenterology, rapid expansion has led in some countries to doctors specializing solely on this area, who are called hepatologists.