Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 6D, § 12

(a) No provider or provider organization may negotiate network contracts with any carrier or third-party administrator except for a provider or provider organizations which are registered under this chapter and regulations promulgated under this chapter; provided, however, that nothing in this chapter shall require a provider or provider organization with a patient panel of 15,000 or fewer or which represents providers who collectively receive, less than $25,000,000 in annual net patient service revenue from payers to be registered if such provider or provider is not a risk-bearing provider organization.

(b) Nothing in this chapter shall require a carrier to negotiate a network contract with a registered provider organization or with a registered provider or provider organization for all providers that are part of, or represented by, a registered provider organization.