A Medical Doctor (MD) is a professional who has completed extensive education and training to diagnose and treat illnesses. They typically earn a bachelor's degree, followed by a medical degree from a recognized medical school. Afterward, they undergo residency training in a specific area of medicine, such as pediatrics or internal medicine, to gain hands-on experience. Medical doctors can work in various settings, including hospitals, clinics, and private practices. They perform physical examinations, order diagnostic tests, prescribe medications, and develop treatment plans for patients. Their primary goal is to promote health and well-being while addressing medical concerns.