Interventional cardiologist Dr. Mirza Baig is board certified in four areas: cardiology, nuclear cardiology, interventional cardiology and internal medicine. Dr. Baig specializes in general cardiology, adult congenital heart disease and interventional cardiology. He treats patients for chest pain, shortness of breath, fatigue, palpitations (an indicator of coronary artery disease), blockages of arteries near the heart muscle, arrhythmias and congestive heart failure.