Dr. John D. McCallum is an orthopedic surgeon specializing in adult reconstructive orthopedic surgery. He practices at Connecticut Orthopaedic Specialists in Hamden, CT, and is affiliated with Midstate Medical Center. Dr. McCallum completed his medical degree at the Perelman School of Medicine at the University of Pennsylvania in 1989, followed by a residency at the University of Rochester Medical Center and a fellowship at the Twin Cities Spine Center.