When effectively performed, nurse case manager job duties and responsibilities help patients who have multiple health conditions, difficult-to-control chronic conditions, disabilities or other challenges get the care they need. Patients assigned to nurse case managers may have better health outcomes due to the individualized attention. Other staff at your facility, institution or agency can use the plans and information that they provide to work more efficiently. In addition, a nurse case manager can cut down on the risk of medical errors by reviewing prescribed medications and test results. Overall, a nurse case manager can improve the quality of care your facility, institution or agency provides and lower its exposure to risk.