An office appointment calendar must record specific details about each appointment, including which of the following?

The correct response highlights the importance of accurately recording the duration of each appointment in an office appointment calendar. Knowing the length of time allocated for each appointment is crucial for effective scheduling and time management. It allows the office to maintain a smooth flow of appointments, avoid overlaps, and ensure that each patient receives the necessary attention within the designated timeframe.

While other details like a patient’s phone number, type of treatment, and reason for visit may also be valuable for various administrative and clinical purposes, they do not directly impact the scheduling and management of appointments to the same extent as the duration does. Recording the duration helps staff strategize and allocate time appropriately for different types of visits, which is essential for maintaining efficiency and satisfaction in the office environment.