This is very strange because this is the first time I've heard this... I and many of my friends have medicare and we have never had any problems with it. We use Mutual Of Omaha Medicare Supplement Plans. You can go to their website and find out everything that interests you. They have a lot of information on their site, so I'm sure you'll find the answer to any of your questions. Our company is highly recommended and is on the list of the top Medicare Supplement companies. That's probably why we never had any problems with medicare..