Anesthesiologists are responsible with the administration and maintenance of pain relief during and after a medical procedure.

Colon and rectal surgeons treat diseases affecting the intestines, colon, and rectum.

Dermatologists treat skin disorders, as well as those affecting the mouth, hair, and nails.

Emergency medicine physicians provide immediate action in critical care cases. Specialties include toxicology, pediatrics, and sports medicine.

Family physicians treat a wide variety of disorders for patients of any age, and emphasize preventative and primary care. Some specialize in sports medicine or geriatrics.

Internists treat diseases affecting internal organs and systems, such as the heart, blood, ears, kidneys, or vascular system.

Geneticists specialize in the treatment of genetic diseases using various testing and intervention methods.

Neurological surgeons and neurologists treat disorders relating to the brain and spinal cord, as well as the associated nerves, muscles, and blood vessels.

Nuclear medicine specialists use radioactive molecules and atoms to help treat disease.

Obstetricians and gynecologists provide prevention and treatment of female reproductive system disorders and diseases.

Ophthalmologists treat, either medically or surgically, disorders of the eye. They also offer general vision services.

Orthopedic surgeons work to maintain function of limbs, the spine, and associated muscles through surgical or physical means. Surgeons can specialize in a number of areas, such as pediatrics, spine, sports, or hands.

Otolaryngologists provide care of the head and neck and treat disorders of the throat, ears, nose, and respiratory system.

Pathologists apply laboratory technique to specimens of body fluid, tissue, and cells to diagnose and monitor disease.

Pediatrician offer preventative services and treatment of diseases to children from birth to adolescence.

: Physiatrists work with patients who have physical disabilities and apply pain management and rehabilitation toward a goal of maximum function.

Plastic surgeons use aesthetic surgical means to reconstruct deformities or in the improvement of undesirable cosmetic attributes. Surgeons can specialize in hand or craniofacial surgery.

Preventative medical specialists work toward general prevention and maintenance of good health. They often specialize in public health, general prevention, occupational medicine, or aerospace medicine.

Psychiatrists offer treatment and prevention methods for emotional, mental, and addictive disorders.

Radiologists use x-ray images to diagnose and treat disease. They also use radiant energy to treat diseases such as cancer.

General surgeons provide care in all phases of a surgery that may affect any part of the body. They often treat victims of trauma and other critically ill patients.

Thoracic surgeons treat patients with disorders of the chest involving the heart, lungs, esophagus, trachea, and other areas.

Urologists handle diseases of the male reproductive organs as well as of the male and female urinary tract.