Reducing unplanned hospital readmissions is a priority patient safety focus, and numerous interventions with hospital pharmacists have been developed. In this study, hospitalized adults aged 70 years and older were randomized to receive standard care or the IMMENSE intervention. The IMprove MEdicatioN Safety in the Elderly (IMMENSE) intervention is based on the integrated medicine management (IMM) model and consists of five steps, including medication reconciliation, patient counseling, and communication with the patient’s primary care provider. There was no significant difference in emergency department visits or readmissions between control and intervention within 12 months of the index hospital visit.