Sheen Doctor's Shocking Hollywood Past Revealed

Sheen had Dr. Robert Huizenga, 63, with him during his TODAY Show appearance when he admitted he was HIV positive. The Harvard Medical School graduate has worked with some of the most famous celebrities in Hollywood during his career.

"We're petrified about Charlie," Huizenga said during the interview. "We're so so anxious that if he was overly depressed or if he was abusing substances he would forget these pills. Magically somehow in the midst of personal mayhem he's managed to take these pills."

Huizenga was the team physician for the Los Angeles Raiders football team for eight years. He wrote the book You're OK, It's Just a Bruise — A Doctor's Sideline Secrets about Pro-Football's Most Outrageous Team, which was turned into the movie Any Given Sunday. He served for four years as president and president-elect for the NFL Physician's Society.

Sheen claimed he had unprotected sex with two women after his diagnosis and that they "were under the care of my doctor and completely warned ahead of time."

He testified on behalf of O.J. Simpson in 1995 during the trial where Simpson was accused and then acquitted of murdering Nicole Brown Simpson and Ron Goldman. Attorney Robert Shapiro brought Simpson to Dr. Huizenga on June 15, 1994, three days after Nicole and Ron were killed. On the stand Shapiro asked him if he examined Simpson's right hand for any cuts or abrasions and Dr. Huizenga replied: "Yes, I did. There is a jagged laceration that extends from the distal interphalangeal joint of the fourth left finger and it comes in almost a snake-like fashion and just it--it slices coming down in this way, (indicating), and then it almost seems to change in the plane and then it is a deeper cut," according to court transcripts.

During cross examination, Attorney Kelberg asked Huizenga: "Doctor, I want you to assume that there's been testimony received in this case that blood that was genetically tested and found to match Mr. Simpson's was found in the foyer and driveway areas of Mr. Simpson's home. Doctor, in your opinion, would the kind of cuts that you observed in Mr. Simpson's hand, left hand, be the kind of cuts that can leave blood drops?" and Huizenga stated: "Yes, they can." Simpson was acquitted by the jury for the murders of Brown Simpson and Goldman.