His areas of expertise consist of multi-organ transplant, robotic surgery, and kidney transplant. Dr. Diwan is affiliated with the University of Cincinnati Cancer Institute. Before performing his residency at a hospital affiliated with Case Western Reserve University, Dr. Diwan attended Case Western Reserve University School of Medicine. Dr. Diwan is an in-network provider for Humana HMO, Humana Bronze, and Humana Catastrophic, as well as other insurance carriers.