I asked my dad's social worker about keeping my dad on Medicare part D as he is also on hospice care. She could not give me a answer. The only meds dad is on is bp meds. It's out of pocket $18/month. He was on Xarelto for a few months but discontinued due to fall and risks due to the falls. His monthly part D premium is going up to $58/month and I cannot see the wisdom of paying the premium if it isn't covering him. Do I call his current provider or Medicare for assistance?