Levi Watkins Jr. (June 13, 1944 – April 11, 2015) was an American heart surgeon and civil rights activist. On February 4, 1980, he and Vivien Thomas were the first to successfully implant an automatic defibrillator in a human patient at Johns Hopkins University. This took place only a mere seven months after Watkins completed his surgical education at Johns Hopkins. Today, millions of patients everywhere use this device, which detects irregular heart beats and corrects them.