Its easy to get confused on WHEN you get Medicare after being granted SSDI. Its 2 years from the day you FIRST APPLIED for ssdi. In my case, I applied for SSDI and was denied. I applied again and was approved. This was over the course of 2 years. So when my approval came through, my waiting period for Medicare had also been met. I got it pretty much along with my first check..............which I got within 10 days. Again, if you apply and are denied....you are still going through all waiting periods if you are later approved.

For those approved right away.....they wait for their first check and they have to wait to receive Medicare.

Medicare is always primary and I still have Hubby's insurance (BCBS) so it becomes secondary and pays for most things Medicare does not. I haven't had any issues with doctors so far. Sometimes they will say they take Medicare, but do not accept what it pays.......so I have more of a cost share.
However, with the new healthcare law in place and cuts to Medicare....I can not speculate what will happen in the future.