Powered by q1group llc. Supplement provider portal. South dakota medicare part d prescription drug plans, including plan features and costs. Medicare part d newsletter, use the online caculators, faqs or contact us through our helpdesk. Prescription drug plans. Have medicare coverage from an. Aetna medicare formulary 2019 medicare part d plan highlights. Low plan premiums, low out. Providing detailed information on the. Medicare information for.