Dr. Mark Chavez, of San Diego, arrived at a courthouse on Friday to plead guilty to supplying the surgical anesthetic ketamine to actor Matthew Perry.
Matthew Perry received an infusion of the anesthetic ketamine days before his untimely death on October 28
The Los Angeles County Coroner's office "deferred" Matthew Perry's cause of death, pending the final results of toxicology tests
"Friends" star Matthew Perry drowned in his hot tub after suffering an apparent heart attack on Saturday, Oct. 28