Dr. Mendak graduated from Loyola University Chicago Stritch School of Medicine in 1980 and has been in practice for 37 years. He completed a residency at Rush Presbyterian St Lukes Medical Center. Dr. Mendak also specializes in Colorectal Surgery. He currently practices at Stephen Boghossian MD and is affiliated with Advocate Good Samaritan Hospital and Elmhurst Memorial Hospital. Dr. Mendak accepts multiple insurance plans including Aetna, Medicare and UnitedHealthcare. Dr. Mendak is board certified in Surgery. Dr. Mendak also practices at Francis E Banich MD SC in Elmhurst, IL. In addition to English, Dr. Mendak's practice supports this language: Spanish.