Ari Greis was named the Eagles' Pain Management Specialist in the 2019 offseason. Dr. Greis is a board-certified physician who specializes in the non-operative treatment of spinal and musculoskeletal disorders. Dr. Greis is a Clinical Assistant Professor of Rehabilitation Medicine at Thomas Jefferson University who has published numerous research articles, textbook chapters, and continues to teach and lecture to residents and medical students. Dr. Greis served as the chief resident at the University of Washington in Seattle and is fellowship trained in sports and spine rehabilitation. He performs fluoroscopic guided spine injections, ultrasound guided peripheral joint injections, trigger point injections, and electrodiagnostic testing.