John R. Kostelny Sr. MD., Captain U.S. Army retired, of Des Plaines, John was a doctor at Lutheran General Hospital in Park Ridge, since it opened in 1959. Beloved husband of Nancy nee Thompson; loving father of John (Bridget) and the late Eric Kostelny and Cindy (Phil) Arndt; proud grandfather of Jason (April) Arndt; fond brother of Ann (late Steve) Janci and the late George Kostelny. Visitation Sunday 3:00 pm to 9:00 pm at the Oehler Funeral Home, 2099 Miner St. (Northwest Hwy. / Rt. 14 at Rand Rd.) Des Plaines.