Below information is relevant to Georgia. YMMV
Pharmacy comments are for CVS, Costco, Kroger, Publix, Walgreens & Walmart only. Did not look at regional pharmacy's other than Publix.
Only considered PREFERRED pharmacy's. (No standard ones)
The list below was prepared 10/3/2021 and some of these may have changed.
AARP/UHC Walgreens plan has ONLY Walgreens as preferred. The other plans include Kroger, Publix, Walgreens, Walmart. AARP lovers that opt for the lowest premium only better love Walgreens.
Aetna preferred are CVS, Kroger, Costco, Walmart
Anthem preferred are CVS, Costco, Kroger, Publix, Walmart
Cigna - Costco, Kroger, Walgreens, Walmart
ClearSpring - CVS, Kroger, Walmart
Elixir - CVS, Costco, Kroger, Publix, Walmart
Express Scripts - GONE, swallowed by Aetna
Humana - Costco, Kroger, Publix, Walmart
Omaha - CVS, Kroger, Walmart
Wellcare - CVS, Costco, Kroger, Publix, Walgreens
Also, consider 3, 6 and 12 month supply for generics when using GoodRx