Dr. John Callahan, a University of Notre Dame graduate, earned his dental degree from Georgetown University School of Dentistry and his orthodontic certification and master’s degree from St. Louis University Center for Advanced Dental Education. Dr. Callahan is past-president of the Northeastern Society of Orthodontists and joined the American Association of Orthodontists Board of Trustees in 2015. He will be the AAO 2024-25 president. He currently is practicing in a multi-doctor private practice in central New York.