Former Green Bay Packers linebacker Brady Poppinga is suing a Southern California hospital and several of its doctors -- claiming they contributed to his teenage son's tragic death last year.
The ex-NFLer filed the suit in Los Angeles this week ... alleging multiple physicians at Providence Cedars-Sinai Tarzana Medical Center did not properly care for Julius Poppinga after the family had admitted the 17-year-old into the facility's ICU.
In the suit, Brady and his wife, Brooke, say they brought in their boy on Aug.