a physician specializing in the heart.

are trained in the diagnosis and treatment of conditions of the heart, lungs and blood vessels such as angina, abnormal heartrhythms and rheumatic heart disease. They often perform complicated diagnostic procedures, such as cardiac catheterization, and they consult with surgeons on heart surgery. Cardiology is a subspecialty of internal medicine.

specialize in the diagnosis and non-surgical treatment of diseases of the heart, lungs, and blood vessels. They manage complex heart problems and perform procedures such as cardiac catheterization and angioplasty. They also treat such problems as congestive heart failure (CHF), arrhythmias (irregular heartbeat patterns) and hypertension (high blood pressure).