Areas of expertise for Dr. Duffy include facial problems, chin implants, and eyelid surgery. He is affiliated with Aurora BayCare Medical Center. He obtained his medical school training at the University of Illinois College of Medicine at Chicago and performed his residency at a hospital affiliated with the University of Illinois at Chicago. He is in-network for several insurance carriers, including Humana HMO, Humana Bronze, and Humana Catastrophic.