How long do you have to go to school to be a physician?

Four years at a college or university to earn a BS or BA degree, Four years of education at one of the medical schools, newly graduated MDs enter into a residency program that is three to seven years or more of professional training under the supervision of senior physician educators, and one to three years of additional training in a subspecialty is an option for some doctors who want to become highly specialized in a particular field.