Chao’s fellowship with the American Association of Orthopedic Surgeons remains suspended, and he has not been certified with the American Board of Orthopedic Surgery since his 2014 probation. Asked about these issues, Chao defended his credibility as a doctor, and a number of Chargers players have come to his defense over the years. As for his growing Twitter presence, he maintains that his long experience on the sideline should establish him as a credible commentator. For instance, when he spots an injury, he now typically says, “By video, it appears to me. It was then that he started a Twitter account under a pseudonym, @ProFootballDoc, to talk about the injuries he was observing.

Source: New York Times December 13, 2018 17:03 UTC