Mass. Gen. Laws ch. 6D § 2A
The commission shall keep confidential all nonpublic clinical, financial, strategic or operational documents or information provided or reported to the commission in connection with any care delivery or quality improvement process or performance improvement plan activities authorized under section 7, 10, 14 or 15 of this chapter or under section 2GGGG of chapter 29 and shall not disclose the information or documents to any person without the consent of the payer or provider providing or reporting the information or documents under said section 7, 10, 14 or 15 of this chapter or under said section 2GGGG of said chapter 29, except in summary form in evaluative reports of such activities or when the commission believes that such disclosure should be made in the public interest after taking into account any privacy, trade secret or anticompetitive considerations. The confidential information and documents shall not be public records and shall be exempt from disclosure under clause Twenty sixth of section 7 of chapter 4 or section 10 of chapter 66.
Mass. Gen. Laws ch. 6D, § 2A