A cardiologist is a doctor who specialises in treating problems of the heart, arteries and veins. Conditions that a cardiologist can address include shortness of breath, chest pains, arrhythmia, angina, heart surgery, heart transplant, hole in the heart and hypertension. A Cardiologist provides services including Cardiac Ablation, Angiogram, Mitral/Heart Valve Replacement, Heart Pump and Cardiac Procedure.