After nearly a half-century in medicine, Dr. William Youngerman is hanging up his otoscope. CHAMPAIGN — He's treated countless patients in his own hometown. And after nearly a half-century in medicine, Dr. William Youngerman of Christie Clinic is hanging up his otoscope. The 78-year-old ear, nose and throat doctor is retiring at the end of the day Friday, and with mixed feelings. He felt it was time, he said.