Mass. Gen. Laws ch. 176A § 10A
Other provisions of this chapter and chapter one hundred and seventy-six G notwithstanding, any nonprofit hospital service corporation, either individually or by contract with a corporation formed under chapter one hundred and seventy-six B, one or more hospitals licensed under chapter one hundred and eleven, one or more health maintenance organizations under chapter one hundred and seventy-six G, physicians registered under chapter one hundred and twelve and other providers of health care licensed or registered pursuant to chapter one hundred and eleven or one hundred and twelve or one or more insurance companies licensed under chapter one hundred and seventy-five, may establish, maintain, operate, own or offer preferred provider arrangements which have been approved by the commissioner under chapter one hundred and seventy-six I.
Provided that contracts governing payment for services rendered to patients covered, by a selective product may not be tied to contracts governing payment for services rendered to other patients.
The entire arrangement or contract between a medical service corporation and a hospital service corporation which involves the operation by one of those entities of a preferred provider program shall be subject to all of the requirements of chapter one hundred and seventy-six I.
Mass. Gen. Laws ch. 176A, § 10A