As for yourself, start investigating Medicare supplement plans right now. It's not as straightforward as it could be, and Medicare by itself is insufficient.
good advice on researching in advance-and this goes for mediCARE in general for wherever you live. find out if your current provider accepts it AND if they will allow you to continue as a patient once you have it (some have long wait lists). explore plans to see which hospitals, labs and pharmacies in your area are covered. depending on your health needs an advantage plan can be an option as well.