We apologize, this video has expired.

Former Team USA doctor Larry Nassar accused of abusing gymnasts during treatment

02:28

Larry Nassar, the former head doctor for USA Gymnastics who treated Olympic athletes, is pleading not guilty to sexually abusing a woman in his home starting when she was six years old. Dozens of other athletes have come forward accusing Nassar of sexually assaulting them. NBC’s Stephanie Gosk reports for TODAY.