A medical doctor include provides health care services to patients or performs other duties related to research, health care administration, or public health care. As a physician who provides patient care, you examine patients, come up with a diagnosis, and provide treatment. Physicians can focus on a specialization, and they can develop their skills to provide services within that specific area of medicine. Your responsibilities depend on the area in which you work. Internal medicine doctors or general practitioners provide primary care, while surgeons and specialists use surgery, medication, and therapeutic techniques to treat specific health issues.