There are many different types of doctors, for example, Dentists, Podiatrists, Osteopaths, Medical doctors. A chiropractor is a licensed practitioner. Chiropractors complete undergraduate studies which include all the necessary pre-requisite courses such as general chemistry, organic chemistry, physics, biology and typically enter professional Chiropractic school to obtain a four-year Doctor of Chiropractic (DC) degree, which is considered a professional or doctorate degree.