this is the first year that i have medicare part D.

[winter is coming]

22. The amount you have to pay may be different for different pharmacies on Humana's list.

I dug this up last night at Humana's website, while trying to help my mom: “If a retail pharmacy agrees to accept the mail-order reimbursement rate for an extended supply of medications, you should have no out-of-pocket payment differences. If a retail pharmacy doesn't agree to accept the mail-order reimbursement rate but has accepted an alternative retail/mail-order pharmacy rate for an extended supply of medications, you will have to pay for any difference in charge.”

A way to find drug coverage info is to go to the Humana website and click the link for “Pharmacy Services”. That takes you to https://www.humana.com/individual-and-family/pharmacy/. Then choose the Medicare pull-down menu (scroll over the word “Medicare” and the letters turn purple and a bunch of sub-options come up), and Pharmacy Services (leftmost column; under “Products and Services”), which takes you to https://www.humana.com/medicare/pharmacy/, then “Rx tools”, then “Search drug lists”. That puts you at https://www.humana.com/medicare/pharmacy/tools/medicare-drug-list/. “Drug List Search” will take you to http://apps.humana.com/UnsecuredDrugListSearch/Search.aspx. You then have to enter your Humana Plan ID or Formulary number, which should be on your Humana card. There's also a Drug Pricing Tool, which will give you an estimate of how much they charge for a drug at different pharmacies on your plan.