Dr. John J. Callahan graduated from the SUNY Upstate Medical University in 1987. He works in Amherst, NY and 2 other locations and specializes in Orthopaedic Surgery and Hand Surgery. Dr. Callahan is affiliated with Erie County Medical Center, Kenmore Mercy Hospital and Mercy Hospital Of Buffalo.
Orthopaedic Surgery, Hand Surgery
Medical School: SUNY Upstate Medical University; Graduated 1987
*This physician has multiple office locations. See Office Information for details.