958 CMR, § 7.12
The Commission shall issue a Final Report on a Cost and Market Impact Review subsequent to the issuance of a Preliminary Report and any written response timely submitted by the Provider or Provider Organization, which shall be within 185 days from the date that the Provider or Provider Organization filed a completed Notice of Material Change with the Commission; provided that the Provider or Provider Organization has certified substantial compliance with the Commission's requests for information within 21 days pursuant to M.G.L. c. 6D, § 13 and 958 CMR 7.07. If the Provider or Provider Organization has not certified substantial compliance within 21 days of the Commission's requests for information as provided in 958 CMR 7.07, the Commission may set a later date for the issuance of the Final Report that is commensurate with any additional time granted pursuant to 958 CMR 7.07.
958 CMR, § 7.12