Article continues below advertisementDr. Salvador Plasencia has pleaded guilty to four counts of distributing ketamine in connection with the 2023 death of actor Matthew Perry.Article continues below advertisementThe physician entered his plea in a federal courthouse on Wednesday, July 23, following a deal with prosecutors, according to NBC News.Article continues below advertisementSource: MEGA; @Salvador Plasencia/LinkedinDr. Salvador Plasencia pleaded guilty to distributing ketamine tied to Matthew Perry's death.