Kenneth Iwamasa Sentenced for Role in Matthew Perry’s Overdose

Kenneth “Kenny” Iwamasa, who was Matthew Perry’s assistant, has been sentenced to 41 months in prison due to his involvement in the actor’s tragic ketamine overdose, according to reports. Los Angeles Judge Sherilyn Peace Garnett also imposed a $10,000 payment and a $100 fine, along with two years of supervised release.

Iwamasa, aged 60, is required to report to prison by July 17.

Before sentencing, prosecutors had recommended a lengthier sentence of three years and five months. Iwamasa’s defense team argued in court that he was merely obeying Perry’s commands, emphasizing that their relationship created a “special vulnerability” that prevented him from saying no.

In a victim impact statement, Perry’s sisters, Madeline and Caitlin Morrison, accused Iwamasa of repeatedly injecting their brother with ketamine in October 2023, ultimately leaving him to drown in his bathtub.

They claimed that Iwamasa misled Perry’s family about the circumstances surrounding his death at his home in Pacific Palisades, California. Madeline also chastised him for speaking at Perry’s funeral later that year.

Perry’s mother, Suzanne Morrison, wrote to the judge expressing that Iwamasa failed in his role as a protector during Perry’s struggles with addiction, stating, “We trusted a man with no conscience, and our son paid the price.”

Another former employee, Lisa Kallio, mentioned in her letter that Iwamasa had been seen driving Perry’s car since his passing.

Perry had hired Iwamasa in 2022, compensating him with $150,000 annually, and he lived in Perry’s Los Angeles residence. The actor, known for his role on “Friends,” had been undergoing “ketamine drip therapy” prior to his death.

Admittedly, Iwamasa administered an illegal dosage of the drug without any medical training, which led to Perry’s untimely death at the age of 54.

In connection with Perry’s death, four others have faced charges: Dr. Mark Chavez, drug counselor Eric Fleming, Jasveen Sangha, dubbed the “Queen of Ketamine,” and Dr. Salvador Plasencia.

Chavez, who acknowledged distributing ketamine to Plasencia, was sentenced to eight months of house arrest in December 2025. In that same month, Plasencia illegally provided Perry with ketamine and received a 30-month prison sentence. Sangha, deemed a convicted drug dealer, received a 15-year sentence in April. Fleming was sentenced in May to two years in prison, along with three years of supervised release for delivering the ketamine that caused Perry’s fatal overdose.