Callahan, Timothy J.

-->Timothy J. Callahan Psy.D. is a clinical psychologist who received his doctorate from Wright State University in Dayton Ohio. Dr. Callahan has 20 years of experience working with children and families as well as adults and teens in a variety of settings including community mental health centers private practice hospitals schools and correctional facilities. He is the Director of Mental Health Services for Greene County Educational Service Center in Yellow Springs Ohio. Dr. Callahan previously served as the Chief of Psychology for Ohio's adult prison system and Clinical Director of a large y...