Physician
Some physicians only work on certain diseases or injuries, or may only work on one part of the human body. These doctors are called specialists. For example, there are doctors who specialize in diseases of the stomach or intestines. Other medical doctors are "general practitioners" or "family practitioners". This means that they do a little bit of everything. The general practitioner the first doctor a patient will see, and this doctor may decide to send them to a specialist doctor if needed.