Inmates are doctors specializing in internal medicine, a discipline focused on adult care emphasizing the use of the best medical science available in patient care in the context of caring and meaningful doctor-patient relationships. At least three of his seven or more years of medical school and graduate training are dedicated to learning how to prevent, diagnose and treat diseases that affect adults. This basic training qualifies them for the practice of internal medicine, and you can see these doctors referred to by several terms, including "internists" or "doctors of internal medicine". But don't confuse them with "interns" who are doctors in their first year of residency. Internists are sometimes called "doctor's doctors" because they are often called on to act as consultants to other doctors to help solve intriguing diagnostic problems.