A carrier, including a dental or vision carrier, shall not refuse to contract with or compensate for covered services an otherwise eligible health, dental or vision care provider solely because such provider has in good faith communicated with or advocated on behalf of one or more of his prospective, current or former patients regarding the provisions, terms or requirements of the carrier’s benefit plans as they relate to the needs of such provider’s patients. See definition section Mass. Gen. Laws ch. 176O, § 1.