Sam Gash knew he needed to find a doctor. The former NFL fullback hadn't seen one for five years, thanks to a self-described "old-school" mentality that kept him from seeking medical attention as long as he was feeling fine. But he could no longer ignore significant lower back pain. So he searched for a health care provider near Detroit, where he'd recently moved to be near his son, Isaiah Gash, who was to play football for Michigan as a walk-on.