Mercyone Mason City Patient Portal Rentals. Rentals Details: Patient Portal - MercyOne Statewide Des Moines, Iowa (IA .Rentals Details: Patient Portal - MercyOne Statewide. View your medical records online using our Patient Portals, available 24/7/365. Updates to your records and new test results post to the portal as soon as they are available.Patient Portals should NOT be used during medical ....