If you're approaching age 65, planning retirement, or recently left your employer health insurance, you may be wondering: "What happens if I miss my Medicare enrollment deadline?" If that's you, take a deep breath. One of the most common calls I receive starts with something like: "James, I think I may have missed something with Medicare. Am I in trouble?" The good news is that many people who think they've made a Medicare mistake still have options available. I've worked wit