Your Medicare number will normally stay the same unless you request to change it. Also, it normally does not need to renewed or replaced, so if you get a call asking for your Medicare number for purposes of renewal, do not give out that information. If you have asked for a replacement, it will be done by a written request.
Medicare numbers can change if the circumstances for how your are receiving Medicare have changed. E.g. You were receiving Medicare through a spouse who passed away, and remarried and are now receiving Medicare through a new spouse.
Medicare numbers can change if the circumstances for how your are receiving Medicare have changed. E.g. You were receiving Medicare through a spouse who passed away, and remarried and are now receiving Medicare through a new spouse.