It doesn't matter. Please, i want to know something. I can get an estimate if i'm receiving Medicare benefits?
Yes, you can. It doesn't matter if you are only receiving Medicare benefits, still you cna get an estimate.
Very good, and to know whether to apply for medicare, should I keep in mind unforeseen circumstances in the future such as an accident for example?
Yes, many unforseen circumstances can occur like a car accident, so your final decision may have to be based on your "best guess."