The standard monthly premium for Medicare Part B beneficiaries will stay at $134 for 2018, CMS announced Friday (Nov. 17), but because seniors are receiving a cost-of-living increase to their Social Security benefits next year, some will have to pay more in Part B premiums than they did this year, when they were shielded from premium increases. Some Medicare beneficiaries were held harmless from increases in Part B premiums in 2016 and 2017, as those who have their premiums deducted...