A cardiologist is a doctor who has specialized training and skill in finding, treating, and preventing diseases of the heart and blood vessels. Cardiologists undergo ten years or more of training, which includes four years of medical school and three years of training in general internal medicine. Find out how a Sydney Cardiologist can help you. If you suspect that you need to see a heart doctor, your doctor may first refer you to a heart specialist. Symptoms of heart disease include chest pains, shortness of breath, or dizziness. Other symptoms of heart disease are a pain in the neck,