NATA 2022: Reunited AT Last Save the date for the 73rd NATA Clinical Symposia & AT Expo June 28–July 1 in Philadelphia. The National Athletic Trainers' Association is the professional membership association for certified athletic trainers and others who support the athletic training profession. Founded in 1950, the NATA has grown to more than 43,000 members worldwide. The NATA AT Tradeshow is one the largest gatherings of athletic training professionals in the world. We hope to see you there!