Kenneth Iwamasa, Matthew Perry's longtime personal assistant, received a 41-month prison sentence for his role in the actor's ketamine-induced death in October 2023. Iwamasa pleaded guilty to conspiracy to distribute ketamine causing death and expressed remorse, stating he "will forever regret" his involvement.
Perry died at age 54 after receiving ketamine infusions at a clinic, with the drug entering his system through injection. The investigation revealed that Iwamasa served as a key link in the supply chain, obtaining ketamine from multiple sources and administering doses to the "Friends" star without proper medical oversight or informed consent about the serious risks involved.
Iwamasa's sentencing marks the culmination of a federal investigation that expanded beyond the actor's immediate circle. Authorities arrested multiple individuals connected to the case, including doctors and dealers who supplied the drug and facilitated its delivery. The case exposed serious gaps in ketamine clinic regulation and the dangers of unsupervised recreational use disguised as legitimate medical treatment.
The assistant's cooperation with prosecutors likely influenced his sentence length. Iwamasa acknowledged enabling Perry's addiction and failing to prevent the lethal doses. His guilty plea came before trial, avoiding a jury verdict that could have resulted in a lengthier sentence.
Perry's death shocked Hollywood and the entertainment industry, highlighting the vulnerability of celebrities to substance abuse despite access to resources. The actor had openly discussed his history of addiction recovery in previous interviews. His death prompted renewed scrutiny of ketamine's availability, celebrity enablers, and the responsibilities of medical professionals administering experimental treatments.
The case represents one of the highest-profile involuntary manslaughter outcomes tied to prescription drug distribution, cementing a sobering precedent for those facilitating access to controlled substances.