The Office of Management and Enterprise Services shall schedule a hearing thirty (30) days prior to adopting any major change in the reimbursement rates or methodology. The Office shall notify health care providers who provide services pursuant to a contract with the Office at least fifteen (15) days prior to the hearing. The notice shall include proposed changes to the reimbursement rates or methodology. The Office shall also inform such health care providers at the hearing of any proposed changes to the reimbursement rates or methodology. At the hearing the Office shall provide an open forum for such health care providers to comment on the proposed changes.