Cardiologists also perform procedures, such as heart catheterizations, angioplasty (inserting balloons in arteries to clear them), and placing stents to keep arteries open. They might also work together to treat irregular heart beat problems. Before surgery, the cardiologist will perform a full evaluation.
A cardiologist is a doctor who specializes in treating diseases of the cardiovascular system — mainly the heart and blood vessels. In order to become a cardiologist, a physician must attend four years of medical school and an additional six to eight years of internal medicine and specialized cardiology training.