Earning a Doctor of Podiatric Medicine allows graduates to diagnose and treat patients who have problems associated with the lower leg, ankle or foot. Before they can practice, students must complete this advanced credential, which typically takes four years to complete at a school of podiatric medicine. Students may take courses focused on scientific subjects, such as biology and chemistry, as well as topics like anatomy and pharmacology. By the end of their studies, graduates have an understanding of the diagnosis and treatment of injuries and malformations of the feet. In addition to classroom instruction, they are also required to complete clinical internships and residencies.