He is professionally affiliated with Yale New Haven Health System. He is a graduate of the University of Massachusetts Medical School. Dr. Duffy completed his residency training at a hospital affiliated with the University of Massachusetts. Patient reviews placed him at an average of 3.0 stars out of 5. Anthem, ConnectiCare, and Blue Cross/Blue Shield are among the insurance carriers that Dr. Duffy accepts. Dr. Duffy welcomes new patients.