Otolaryngologists are more commonly called ENTs, which stands for ear, nose, and throat. ENTs are medical professionals that are trained to diagnose and treat diseases and illnesses that affect the ear, nose, throat, and related structures of the head and neck. They can treat serious diseases, such as cancer, or simple health problems, such as strep throat.

A gastroenterologist is a healthcare professional who has been educated and trained to treat patients who are experiencing health problems or have diseases that affect the gastrointestinal tract and liver. They also diagnose and treat diseases that affect the esophagus, stomach, small intestine, colon, rectum, pancreas, gallbladder, bile ducts, and liver.

An internist or Internal Medicine doctor is someone who specializes in diagnosing and treating illnesses, diseases, and health problems. Most internists are also primary care doctors and treat patients on a regular basis. They can diagnose and treat common illnesses or more serious problems. Most people see an internist regularly. Those with chronic illnesses may do so on a monthly or even weekly basis. Internists are the most common types of doctors.

A plastic surgeon is a medical professional who specializes in reconstructing and improving physical appearances. They may also perform reconstructive surgery on patients who have had accidents or health problems that have caused them to need a prosthesis or another type of surgery. When someone is injured or suffers a deformity or problem caused by an illness, disease, or birth defect, the plastic surgeon can repair it.