(b) Composition of the interdisciplinary group. The interdisciplinary group or groups shall include at least the following individuals:

1. (1) A doctor of medicine or osteopathy;
2. (2) A registered nurse;
3. (3) A social worker; and
4. (4) A pastoral or other counselor.

(c) Role of the interdisciplinary group. The interdisciplinary group shall:

1. (1) Participate in the establishment of the plan of care;
2. (2) Provide supervision of hospice care and services; and
3. (3) Periodically review and update the plan of care to reflect the needs of each patient receiving hospice care.