105 CMR, § 420.850
The person to whom any order has been served pursuant to any regulation of 105 CMR 420.000 may request a hearing before the Commissioner of Public Health by filing within seven days after the day the order was served in the office of the Commissioner of Public Health a written petition requesting a hearing on the matter. Upon receipt of such petition the Commissioner or his/her designee shall set a time and place for such hearing and shall inform the petitioner thereof in writing. The hearing shall be commenced not later than ten days after the day on which the petition was filed; provided, that upon application of the petitioner the Commissioner may postpone the date of the hearing for a reasonable time beyond such ten-day period if in his judgment the petitioner has submitted a good and sufficient reason for such postponement.
105 CMR, § 420.850