Dr. Ari Greis, DO Physiatrist (Physical Medicine & Rehabilitation) (800) 321-9999 (267) 479-1321 https://www.doctor.com/Dr-Ari-Greis https://facebook.com/pages/Rothman-Institute/202949433100953 Bryn Mawr PA 19010 825 Old Lancaster Road Suite 100, 140 and 200 https://a.doctor.com/img?p=providers/416588-Ari_Greis.jpg&w=200 Dr. Ari Greis, DO is a Physiatrist (Physical Medicine & Rehabilitation) - General practicing in Bryn Mawr, PA. 416588-Ari_Greis.jpg