LOS ANGELES — Another physician who played a role in providing ketamine to Matthew Perry weeks before the actor’s overdose death was sentenced to eight months of house arrest by a federal judge on Friday.

Mark Chavez, a former doctor, pleaded guilty to one count of conspiracy to distribute ketamine in October last year. In his plea agreement, Chavez acknowledged that he and Salvador Plasencia — an ex-doctor sentenced to nearly three years in prison earlier this month — colluded to deceive medical ketamine suppliers and illegally distribute the drug to Perry for profit.

Chavez, 54, was also sentenced to three years of supervised release following his house arrest and must perform 300 hours of community service.

Chavez was one of five individuals charged last year for their alleged roles in Perry’s October 2023 death. The others include Perry’s acquaintance Erik Fleming, personal assistant Kenneth Iwamasa and Jasveen Sangha, a North Hollywood woman allegedly known as the “Ketamine Queen.” All have pleaded guilty to federal charges and await sentencing in the coming months.

During the sentencing, U.S. District Judge Sherrilyn Peace Garnett brought up concerns about sentencing disparities between Chavez and Plasencia. Assistant U.S. Attorney Ian Yaniello argued that the government’s recommended sentence of six months house arrest was due to Chavez’s cooperation with investigators.

“As doctors, their conduct was egregious,” Yaniello said. “The difference was what they did when they got caught.”

Before charges were brought against the five alleged distributors, Chavez surrendered his medical license and sought a plea deal with the government.

According to an indictment, Plasencia contacted Chavez to purchase ketamine after learning Perry was interested in depression-related treatments in September 2023. Chavez then supplied Plasencia with ketamine vials and orally-transmitted “lozenges,” that were fraudulently obtained under another patient’s prescription, his plea agreement said.

“If today goes well we may have repeat business,” Plasencia texted Chavez less than a month before Perry’s death.

“Let’s do everything we can to make it happen,” Chavez responded, court records show.

Chavez had faced a potential maximum of 10 years in prison, prosecutors said.

Prosecutors argued that Chavez improperly obtained authorization from the Drug Enforcement Administration to prescribe and administer medical ketamine.

Chavez purchased 22 of vials of liquid ketamine, ketamine lozenges and other medical supplies from wholesale distributors to provide to Plasencia, who would personally deliver them to Perry, the judge said before her ruling.

During his Dec. 3 sentencing hearing, a federal judge castigated Plasencia for his medical malpractice and for teaching Perry’s personal assistant to administer the drug at the actor’s Pacific Palisades home. Chavez never met with Perry in-person, but allowed Plasencia to continue the treatments despite knowing that Plasencia had “little” experience with ketamine treatments, according to his plea

According to their plea agreement, Chavez called Plasencia on the day of Perry’s death to inquire whether he believed they distributed drugs that may have killed him. Prosecutors said that ketamine was not supplied by the physicians.

Chavez offered a brief apology immediately before his sentencing.

“As a doctor, I’ve had a wonderful opportunity to help people’s lives, but I’ve also had to deal with the tragedies,” Chavez said. “My heart goes out to the Perry family.”

Chavez’s attorney said that he would reside in Mexico with his father after serving his sentence.

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