I would argue that having Part D coverage handled directly by medicare, with the power to negotiate prices, would have a positive effect on prices for Part B medication as well. By having Medicare only provide certain medications, it makes it more difficult to bring proper purchasing power. It would also make it a lot easier on people who are on disability to manage their health. I'm on disability, and when I have a problem with a prescription, it's an absolute mess trying to figure out if I need to contact Medicare, or if I need to contact my Part D provider. To make things more complicated, there are times I need to contact Medi-Cal, because I have a certain amount of my coverage handled under Medicaid.