Dr. Greco is a Clinical Professor at the University of Pennsylvania School of Dental Medicine, and a faculty member at Thomas Jefferson University Hospital and the Einstein Medical Center. He maintains a private practice in Philadelphia, PA. Dr. Greco is a diplomate the American Board of Orthodontics (ABO). He served as an ABO Director from 2002-2010, ABO President (2009-2010), and is an ABO examiner. He received the Earl E. Shepard Service Award and the Albert H. Ketcham Award in 2018 and 2024 respectively. Dr. Greco was Angle Society President from 2019-2021 and remains on the Angle Board of Directors since 2011. He received the Society’s Distinguished Service Award in 2019. He is a member of the American College of Dentists, the International College of Dentists, the American Society of Dental Ethics, the American Association of Orthodontists and the College of Diplomates of the ABO.