Never heard of them. I have had AARP Medicare Preferred with United Healthcare since Part D started. This year I decided to check out some other plans. Make sure you check ALL your medications against their formularies to see which Tier each med is under and what the co-pay is. One of my drugs, a generic, was $6 for a 90 day mail-in supply but $166 under another's plan. I called the other plan to ask why they had this drug listed as a Tier 3 when it was a generic drug and the girl said that some generics are more expensive than others. Will stick with my plan.