diagnose illnesses and prescribe and administer treatment for people suffering from injury or disease
2 types of physicians: M.D.—Doctor of Medicine—and D.O.—Doctor of Osteopathic Medicine
work in one or more of several specialties, including, but not limited to, anesthesiology, family and general medicine, general internal medicine, general pediatrics, obstetrics and gynecology, psychiatry, and surgery
Self-employed physicians—those who own or are part owners of their medical practice—generally have higher median incomes than salaried physicians, but they must provide for their own health insurance and retirement.
Earnings vary according to number of years in practice, geographic region, hours worked, and skill, personality, and professional reputation.