The State of Illinois temporarily suspended Dr. Constantino Perales' license after an investigation.
Police raided Perales' Peru office last week.
Perales allegedly prescribed drugs, like Oxycodone and Xanax, without proper patient evaluation.
Peru's police cheif says an extensive investigation is ongoing with the FBI and DEA.
Perales remains in jail on a $1 million dollar bond.
More federal charges are expected in the case.