Dr. John J. Callahan has been practicing medicine for 27 years. Dr. Callahan graduated from the SUNY Upstate Medical University in 1987. He practices medicine in Buffalo, NY and 1 other location and specializes in Hand Surgery and Orthopaedic Surgery. Dr. Callahan is affiliated with Mercy Hospital Of Buffalo, Erie County Medical Center and Kenmore Mercy Hospital.
Years in Practice: 27 Years
Languages Spoken: English
Medical School: SUNY Upstate Medical University
Graduation Date: 1987
Specialties: Hand Surgery, Orthopaedic Surgery
*This physician has multiple office locations. See Appointments for details.