Humanna is not a supplement, it is an all in one managed care replacement plan. If you consider it, read the "fine" print very carefully, as there are tons of Co-pays, and deductibles. You will pay less for premiums, but if you need any services, you will be out of pocket a lot more, and it will only pay to the list of hospitals and physicians they contract with. A supplement pays in addition to Medicare all the deductibles and co-pays not covered by Medicare and you will have almost no out of pocket for medical care with no restriction on what hospital or doctor you see. I had about $75,000 worth of medical care this past year, and the only thing I paid was the travel expense to go to a specialized clinic and hospital $100 miles away.