The Medical Board Says David Chao Is A Drunk. Former Patients Say He's A Quack. Why Is He An NFL Team Doctor?Barry Petchesky8/29/11 3:45pm114EditPromoteGo to permalinkThe DEA says Dr. David Chao wrote himself illegal prescriptions more than a hundred times between 2008 and 2010. The California state medical board says he's an alcoholic and needs psychiatric help. Four former football players have sued Chao for malpractice, claiming he ended or shortened their careers.