(a) No person shall violate an order of the Board, Commissioner or Department.
(b) Service of any order of the Commissioner or Department shall be deemed legally sufficient if delivered personally or if mailed by ordinary first class, certified or registered mail, express or overnight mail, through the United States Postal Service or through any commercial expedited mail or parcel delivery service, in no particular order of priority, upon any person, officer, department or employee referred to in § 17-141 of the Administrative Code. The Department shall maintain records attesting to the manner of service used and the person or entity served in each instance. Service of any order issued pursuant to subdivision (d) of 24 RCNY Health Code § 3.01 shall be deemed legally sufficient if served in accordance with the provisions specified therein.