Section 2. (a) Notwithstanding the provisions of any other law to the contrary, and subject to the provisions of OBRA 90 and Section 1882 of the federal Social Security Act (42 U.S.C. § 1395 et seq.), any policy for medicare supplement insurance or medicare select insurance or policy issued pursuant to a risk or cost contract offered, sold, issued, delivered, or otherwise made effective or renewed by a carrier in the commonwealth after July first, nineteen hundred and ninety-four shall comply with the provisions of this chapter.

(b) A carrier that participated in the market on or after a date set by the commissioner by regulation may not withdraw from the market until all insureds of such carrier have had the opportunity to join a policy for medicare supplement insurance or medicare select insurance or a policy issued pursuant to a risk or cost contract offered by another carrier during the next annual open enrollment period or other enrollment period required in section three.

(c) A carrier that withdraws from the market on or after the effective date of this chapter may not participate in the market in the commonwealth for five years from the date of withdrawal, unless the commissioner finds that such re-entry shall be permitted earlier than said five years due to a compelling public interest.