I think Walmart is taking over the prescriptions. And I found out that Medicare does not include CVS. Of course CVS is higher than anyone else.
A mixed bag for me. My Aetna Medicare Advantage 'forced' me to switch from Walgreens to Walmart a couple of years ago. They use Walmart as a preferred, but not Walgreens.
Their OTC allotment ($60/qtr) must be fulfilled through CVS -- local (which none are close) or mail-order. And I agree that CVS is way over-priced.