the bill would direct medpac to report to congress on: (1) the payment update for professional services applied under medicare for 2014 through 2018, (2) the effect of such update on the efficiency, economy, and quality of care provided under such program, (3) the effect of such update on ensuring a sufficient number of providers to maintain access to care by medicare beneficiaries, and (4) recommendations for any future payment updates for professional services under such program to ensure adequate access to care is maintained for medicare beneficiaries.