what is a cardiologist
Share. Cardiologists are doctors who specialize in diagnosing and treating diseases or conditions of the heart and blood vesselsâthe cardiovascular system. You might also visit a cardiologist so you can learn about your risk factors for heart disease and find out what measures you can take for better heart health.f your cardiologist decides that you need surgery, he or she refers you to a cardiovascular surgeon, who specializes in operations on the heart, lungs, and blood vessels. You remain under the care of your cardiologist even when you are referred to other specialists.