Final answer:
The step in the case management process initiated when a healthcare organization schedules care service is Planning. This step follows the assessment and involves preparing for service delivery.
Step-by-step explanation:
When a healthcare organization schedules an episode of care service based on a physician's contact, the step in the case management process that is initiated is Planning. This is because the act of scheduling implies that an assessment has already been made (regarding the need for the episode of care), and the organization is now planning the delivery of that care. The subsequent steps following planning would typically include coordinating resources, confirming appointments, and preparing for the delivery of services to the patient.