(a) A holder of a license that has been revoked, suspended, or placed on probation, may petition the board for reinstatement or modification of a penalty, including reduction or termination of probation, after a period not less than the applicable following minimum period has elapsed from either the effective date of the decision ordering that disciplinary action, or, if the order of the board or any portion of it was stayed, from the date the disciplinary action was actually implemented in its entirety. The minimum periods that shall elapse prior to a petition are as follows:

1. (1) For a license that was revoked for any reason other than mental or physical illness, at least three years.
2. (2) For early termination of probation scheduled for three or more years, at least two years.
3. (3) For modification of a penalty, reinstatement of a license revoked for mental or physical illness, or termination of probation scheduled for less than three years, at least one year.
4. (4) The board may, in its discretion, specify in its disciplinary order a lesser period of time, provided that the period shall not be less than one year.