The different specialists in the Cardiology department may include the following: Interventional Cardiologists focus mainly on minimally invasive procedures to diagnose and treat various heart conditions. Cardiac Surgeons deal with coronary artery bypass grafting, heart valve repair or replacement, and surgeries to address structural abnormalities. Cardio Thoracic and Vascular Surgeons deal with the diseases or complications of ischemic heart disease, treat valvular heart disease, or correct congenital heart disease. Non-Invasive Cardiologists measure cardiac output to assess the overall performance of the heart, identify any abnormalities, and develop tailored treatment plans accordingly. Electrophysiologist deals with disorders that can range from harmless irregular heartbeats to life-threatening conditions. Many times, one doctor has more than one specialty. You can consult with that specialist, depending on your condition.