Mass. Gen. Laws ch. 123A § 2
The commissioner of correction shall maintain subject to the jurisdiction of the department of correction a treatment program or branch thereof at a correctional institution for the care, custody, treatment and rehabilitation of persons adjudicated as being sexually dangerous. Said facility shall be known as the "Nemansket Correctional Center". The commissioner of correction shall appoint a chief administrative officer who shall have responsibility for providing personnel with respect to the treatment and rehabilitation of the sexually dangerous persons, consistent with public safety. The commissioner of correction shall have the authority to promulgate regulations consistent with the provisions of this chapter.
Mass. Gen. Laws ch. 123A, § 2