the sgr repeal and medicare provider payment modernization act of 2014 would amend title xviii (medicare) of the social security act (ssa) to: (1) end and remove sustainable growth rate (sgr) methodology from the determination of annual conversion factors in the formula for payment for physicians' services; (2) establish an update to the single conversion factor for 2014 through 2018 of 0.5%, (3) freeze the update to the single conversion factor at 0.00% for 2019 through 2023, and (4) establish an update of 1% for health professionals participating in alternative payment models (apms) and an update of 0.5% for all other health professionals after 2023.