Entrustable professional activities (EPAs) involve the integration of a variety of core competencies into professional practice tasks, and they can be applied for learning and training in the medical workplace. Supervision levels can help guide the development of competencies and are referenced for clinical work authorization. This paper describes the development of EPAs for entry-level dietitians in a postgraduate clinical training program established by the Ministry of Health and Welfare at teaching hospitals in Taiwan. Clinical instructors in dietetics and nutrition experts from across Taiwan were invited to participate in a consensus development conference, and the nominal group technique was employed to develop profession-specific EPAs. This project established seven EPAs, namely, nutritional care for inpatients with common diseases, nutritional care for outpatients with common chronic diseases, nutritional care in critical care units, hospital plate-meal preparation and supervision, meal design and cost management, group education for disease-specific nutrition, and nutritional care in residential long-term-care institutions. The establishment of EPAs can help transform such competencies into criteria for the authorization of clinical nutrition work in teaching hospitals and may enhance the quality of nutritional medical services.