My advantage plan charged Dec. and Jan premiums for Medicare B which I paid only to now find out it is deducted from my benefits?? Will they reimburse me.?

Hi. Yes. Duplicate Medicare premiums that are withheld from Social Security benefits should be refunded automatically. You may need to be patient, though, because it takes some time for the information to be exchanged between the Medicare Advantage insurance companies and Social Security.

One fact I'll mention for clarity is that even though Social Security benefits are paid a month behind, Part B Medicare premium deductions are for the current month's coverage. In other words, Social Security benefits paid in December are for November, but Part B premiums deducted from Social Security payments received in December cover the person's Medicare premium for December. That often causes confusion over how much, if any, of a premium overpayment actually occurred.

Best, Jerry