Final answer:
A middle-level manager in healthcare is responsible for planning for changes within the service line of the organization, a task not typically assigned to lower-level supervisors or upper-level executives.
Step-by-step explanation:
The activity you would expect to see only from a middle-level manager is planning for changes within the service line in the organization. Middle-level managers are responsible for translating the high-level organizational goals and strategies into specific plans that guide the work of their units. In addition to maintaining professional currency and supervising patient care delivery, they would be proactively preparing for upcoming shifts in operation, such as those in an Intensive Care Unit (ICU), Cardiac Care Unit (CGU), Emergency department, or Medical Surgical environments. Being versed in the nuances of these areas, middle-level managers are expected to anticipate and plan for changes that affect the service lines under their jurisdiction.