Republican efforts to repeal ObamaCare will likely leave Medicare untouched, meaning former President Obama will leave his mark on the popular health program for more than 58 million elderly and disabled “There are changes to Medicare that are in the ACA that have taken effect that people are benefiting from today,” Juliette Cubanski , Kaiser Family Foundation Medicare policy program associate director, told The Hill Extra. “Medicare, the way it is now, is really popular.