My treatment center does not accept Medicaid so I have to pay out of pocket for my medicine. Will Medicaid pay me back?

You need to call the social worker at the Medicaid office and ask them. Some states will reimburse part of expenses paid out of pocket - some will not. It depends on the type of medicine, and whether the facility meets the guidelines for Medicaid, even if they don't accept it. Some states don't pay for certain procedures or medications if you are on medicaid.