John B. Kalis MD, age 71, of Elmhurst; beloved husband of 45 years to Mary Ann, nee Castelli; loving father of Christopher (Lisa Armstrong) Kalis and Erica (Bob) Voightmann; cherished grandpa of Natalie, Matthew and Emily Voightmann; devoted son of Pauline, nee Bajdek and the late Florent Kalis; dear brother of Linda Kalis; fond brother-in-law, uncle, cousin and friend of many. John was a kind, compassionate, generous man, known for his integrity. Above all, he was a family man and an enthusiastic, patient grandpa. He exemplified how to treat others and enjoyed life. He loved to play golf, listen to music, and cook, and he was learning how to play bass guitar. He and Mary Ann enjoyed traveling to many parts of the world, but his favorite place was Italy, where they have returned many times. John was a highly respected dermatologist who was committed to treating diseases of the skin, truly listened to his patients and was dedicated to their care. He began practicing dermatology in Charleston, IL and in 1986 moved his practice to Oak Brook. He was a founding member of Illinois Dermatology Institute and continued his practice in Hinsdale. For over 30 years, he taught residents in the dermatology program at Rush University, where he completed medical school and his dermatology residency. He also taught residents in the LaGrange Family Medicine program for 37 years. He received Teacher of the Year awards from both programs. During his career he was a member of many professional organizations in which he also served in various leadership roles, including Great Lakes Dermatology, the Noah Worcester Dermatological Society, Illinois Dermatological Society, Chicago Dermatological Society, American Academy of Dermatology. He was named Practitioner of the Year by the Chicago Dermatological Society. Visitation Friday, December 1, 2023, 3:00 p.m. until 7:00 p.m. at Gibbons Funeral Home, 134 South York Road, (½ mile North of Saint Charles Road), Elmhurst. Mass of Christian Burial, Saturday, December 2, 2023, beginning at 10:00 a.m. at Visitation Catholic Church, 779 South York Road, (at Madison), Elmhurst. Interment Private. In lieu of flowers, memorial contributions may be made to The Love Fridge Chicago, www.thelovefridge.com, or the Elmhurst-Yorkfield Food Pantry, 1083 S York St., Elmhurst IL 60126 or www.eyfp.org. For funeral information please call 630-832-0018 or www.gibbonsfuneralhome.com