not to state the obvious but you can certainly delay if you continue to work past 65 and are covered by an employer insurance plan.
I'm wondering now if it is worth trying to go back to work just for the insurance/drug coverage. It should be a crime to have to pay $1500 for a 30 day supply of...
MAGI is also a consideration for the premium you pay for Medicare every month and the bar isn't that high before you go up to the next tier of premiums cost.