A man who admitted schooling people in “doctor shopping” as a way to illegally get prescription drugs was sentenced Tuesday by Chief U.S. District Judge William M. Skretny to nine years in prison.

Michael McCall, who saw a more serious charge of overseeing a drug network dropped by federal prosecutors, pleaded guilty in September to conspiracy to possess and sell Oxycontin.

McCall, as part of a plea deal, admitted selling Oxycontin and, in a few instances, instructing people on what to say and do when requesting a prescription for Oxycontin from a doctor.

The investigation into McCall, headed by the U.S. Drug Enforcement Administration, targeted drug dealers who relied on unsuspecting doctors and pharmacists and catered to people from all walks of life, many of them teenagers.

His arrest followed the highly publicized deaths of several young people using illegal prescription drugs and subsequently heroin, a drug often linked to painkillers and other prescription drugs.