Dr. Alan S. Colitz, 70, beloved husband of the late Judith, nee Kittay for over 43 years; loving father of Dr. Andrew Colitz (Nogah) and grandfather of Jules Izzy Colitz; treasured brother of Natalie (Ronald) Cohen & Susan Diamond (Henry) Abraham; caring uncle of David & Suzanne Cohen, David & Robert Diamond; Ilana & Keith Cooper (Courtney); David & Katie Grass; dearest brother-in-law of Andy (Stuart) Grass & Leila (Dr. Bruce) Cooper; dedicated cousin to Norman (Sarah Ann), Fred (Trisha), and Sheldon (Laura) Margulies; committed partner to Linda Fink. Alan was educated at the University of Wisconsin Madison and Loyal Dental School, which prepared him for his life's work as a dentist. Alan was welcomed everywhere. His magnetic personality, humorous and witty charm along with his beautiful voice allowed him to develop life-long friendships and to find the fun in any situation. Services have been held. Interment Shalom Memorial Park. Donations may be made to Breast Cancer Research Foundation (www.bcrf.org) or Gilda's Club of Chicago (www.gildasclubchicago.org). For more information or to leave condolences: (847) 255-3520 or www.shalom2.com