225 ILCS 90/23
In any case involving the refusal to issue, renew or discipline of a license, a copy of the Board's report shall be served upon the respondent by the Department, either personally or as provided in this Act for the service of the notice of hearing. Within 20 days after such service, the respondent may present to the Department a motion in writing for a rehearing, which motion shall specify the particular grounds therefor. If no motion for rehearing is filed, then upon the expiration of the time specified for filing such a motion, or if a motion for rehearing is denied, then upon such denial the Director may enter an order in accordance with recommendations of the Board except as provided in Section 22 of this Act. If the respondent shall order from the reporting service, and pay for a transcript of the record within the time for filing a motion for rehearing, the 20 day period within which such a motion may be filed shall commence upon the delivery of the transcript to the respondent.
225 ILCS 90/23