Prior Authorization Medicaid and MississippiCAN Pharmacy Prior Authorization Contacts   Keep in mind that MississippiCAN claims and PA requests must be submitted to the respective PBM. Submitting claims and/or prior authorization requests to Medicaid rather than to the respective plan delays the process for Medicaid, providers and beneficiaries.  Prior Authorization Forms Magnolia Prior Authorization form for non-mental health service UnitedHealthcare Prior … Continue reading MississippiCAN Provider Information