Me. Rev. Stat. tit. 24-A, § 7107

An insurer that issued a reimbursement insurance policy may not cancel or nonrenew the policy for any reason, including at the request of the policyholder, until the insurer has delivered a notice of such action to the superintendent at least 45 days before such action. The cancellation or nonrenewal of a reimbursement insurance policy does not reduce the insurer's obligations as to service contracts issued by providers prior to the date of cancellation or nonrenewal.