225 ILCS 450/17.3

At any time after the successful completion of a term of indefinite probation, suspension, or revocation of a license or registration, the Department may restore the license or registration to active status, unless, after an investigation and a hearing, the Secretary determines that restoration is not in the public interest. No person or entity whose license, certification, or authority has been revoked as authorized in this Act may apply for restoration of that license, certification, or authority until such time as provided for in the Civil Administrative Code of Illinois.