Every year, nearly 16.7 million people die of cardiovascular disease. The good news is many of the deaths caused due to cardiovascular disease can be averted. Wonder how? Well, heard of the age-old saying, "A stitch in time saves nine." Timely intervention and a routine heart checkup are all it takes to keep the heart alive and beating. Luckily, America has been home to some of world's best heart centers and some equally renowned cardiologists, who have pulled off live-saving feats in the operating table. Dr. Thomas Bashore, Dr. Raymond Gibbons, Dr. Nieca Goldberg, Dr. Jonathan Halperin, Dr. Steven Nissen, Dr. William O’Neill, Dr. Stuart Russell, Dr. Joseph Tenenbaum, Dr. Jonathan Tobias, and Dr. Gary Webb are just some of the new-age cardiovascular specialists who have carved a niche for themselves with their extensive and avant-garde research work. But these are not the only cardiac pioneers that America has produced. Acquaint yourselves with the timeline, trivia, and interesting facts on America's greatest cardiologists in their biographies covered below.