Information on the study of medicine, fields and disciplines Healthcare professionals and scientists have carefully prepared this ALtruis Biomedical Network-affiliated site, intended for informational purposes only . This site will be a hub for information relevant to various medical specialties such as internal medicine, dermatology, gynecology, ophthalmology, etc. There are two types of physician in the United States. Both M.D.s and D.O.s must pass a state medical board examination in order to obtain a license and enter practice. Either may receive training and become certified in a medical specialty or subspecialty.
Most physicians choose to specialize in a particular form of medicine.
Some of these specialties are described below. The year of internship may or may not be included as part of the fellowship training. After completing the fellowship, a physician may take a qualifying exam offered by one of the medical boards. Upon successful completion of the exam, the physician becomes board certified in the specialty. Periodic reexaminations are now required to maintain certification.