211 CMR, § 67.15
The Commissioner shall examine the affairs, transactions, accounts, records and assets of each group and of the administrator of each group as often as the Commissioner considers advisable, but not less often than once every three years. The expense of such examinations shall be assessed against the group in the same amount and manner that insurers are assessed for examinations, pursuant to the provisions of M.G.L. c. 175, § 4 and M.G.L. c. 7, § 3B.
The Commissioner or his or her designee shall have free access to all the assets of the group for the purpose of verification and to all the books and papers relating to its business and to the books and papers of its representatives. The Commissioner or his or her designee may summon and examine under oath any person who, he or she believes, has knowledge of the affairs, transactions or circumstances being examined or investigated, and whoever without justifiable cause neglects upon due summons to appear and testify before the Commissioner or his or her authorized representative, and whoever obstructs the Commissioner or the representative in making examinations or investigations hereunder, shall be punished by a fine of not more than $1,000 or by imprisonment for not more than one year.
211 CMR, § 67.15