A surgeon familiar with Michael Jackson's medical history is speaking out to ET about the late icon's plastic surgeries and alleged access to prescription drugs.

"In the early 1990s, I tried to call attention to some of these issues to the appropriate authorities and took a lot of heat from it, some of which has persisted to this day," says L.A. surgeon Dr. Wallace Goodstein, who belonged to a practice where one of Jackson's surgeons also worked.

"In my mind, excessive and frequent plastic surgical procedures and inappropriate prescribing of prescription medication began a long and inevitable road to Michael's destruction. I will always question whether this outcome could have been avoided."

Keep checking back here for the latest on ET's Michael Jackson investigation.