Understanding Your Medicare Card is important so you know how best to use it. When you’re enrolled in Medicare, you’ll receive in the mail your red, white, and blue Medicare card. If you’re automatically enrolled, you’ll get your Medicare card in the mail 3 months before your 65th birthday or your 25th month of getting disability benefits. Your Medicare card shows that you have Medicare health insurance Part A (Hospital Insurance), Part B (Medical Insurance) or both, and it shows the date your coverage starts. Knowing how your card works, how to report a stolen Medicare Card, how preventing ID Fraud are all covered in this article so you are better informed.