Divulging on the issue of whether or not the cost of medicare supplemental insurance will rise with time.
The cost of medicare supplemental insurance in the United States is currently reflected of the cost of the bills that it covers. Insurance companies have to stay competitive with one another or they will lose much business in this market. However, since it is not a necessary part of the insurance plan there will not be as many individuals looking for supplemental insurance the price will have to be high. Though in the future it looks as though the cost of medicare supplemental insurance will only change if the costs of the procedures or care they are paying for goes up.
Now there is the chance that certain plans may cost more in the future. Certain plans might not have as many customers in the future and this will cause everyone that needs it to pay more. This is just how insurance works and it will not effect the doctors or hospital staff. This is not likely to happen because the insurance companies have already accounted for this in the price as it is. Unless something drastic happens the cost of medicare supplemental insurance will stay around the same price.
There is a possibility for these supplemental plans to be at a lower cost but it would require a national change. If more people in the United States lived a healthier lifestyle then it would mean less medical problems in the later years of life. Then if people on these supplemental plans did not have as many problems as they would have, then there would be less costs for the insurance companies to cover. And thus this trickles down to the individual users who will have to pay less for the same service. Now, if only we can get the whole country to start living healthier.