A local cardiologist is a medical doctor who treats a variety of cardiovascular diseases. Some of the heart conditions your local cardiologist may treat include heart disease, heart attacks, coronary microvascular disease (the narrowing of the small blood vessels of the coronary arteries) and atrial fibrillation (irregular heartbeat). Depending on the condition you have, a local cardiologist may prescribe medication, cardiovascular surgery and/or lifestyle changes or surgery. Your local cardiologist can work with your local registered dietitian or local nutritionist to help you plan heart-healthy meals, lower cholesterol, lose weight and fuel your body for exercise.