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The field of medicine covers a broad range of physicians in both primary care and specialty healthcare. In general, they perform examinations of patients, diagnose illnesses, educate patients and treat disease and injury.

Physicians or doctors are practitioners of medicine. They devote their entire career to learning about providing care for their patients with new technologies, equipment, techniques and medications.

There are two types of physicians: the doctor of medicine (md) and the doctor of osteopathic medicine (DO). MDs and DOs may practice general medicine or concentrate on a medical specialty. They work as leaders and coordinators of the healthcare team, referring patients to appropriate resources for care and overseeing the practice of other healthcare providers.