Family and general practitioners are often called primary care physicians. They diagnose, treat and help prevent disease and injuries. Family practitioners may refer patients to doctors who are experts in certain diseases, called specialists, when further treatment is needed.

Athletic trainers help prevent injuries among athletes and help them recover from injuries. They are health care professionals that diagnose and treat injuries caused by stress to the musculoskeletal system. They are also trained to teach injury prevention methods to people who work in jobs that have a high demand of physical activity.

Nurse practitioners diagnose and treat both sudden and long-term conditions. They may do physical exams, physical therapy or order tests and therapies for patients. NPs order, perform or interpret results of blood tests, EKGs and X-rays. They use these tools, along with patient symptoms and medical history to develop the right diagnosis.