In 2008, Medicaid reimbursements averaged only 72 percent of the rates paid by Medicare, which are themselves typically well below those of commercial insurers, according to the Urban Institute, a research group.---taken from the NYT
I have trouble with 'themselves'. I originally thought it was redundant and could be removed without change of meaning, and then think it may emphasize something. But I would like to know whether I am right? Thanks.
Yes, it emphasizes 'which', referring to the Medicare rates. It could be left out but sounds better in, as it emphasizes the double disparity: reimbursements are less than Medicare rates, and those are well below commercial rates.