Final answer:
The new member of the collaborative care team for MAT is a recovery coach, who assists individuals in setting goals and developing plans for their recovery from addiction.
Step-by-step explanation:
The new member of the collaborative care team for Medication-Assisted Treatment (MAT) is a recovery coach. A recovery coach is an individual who is trained to support others in recovery from addiction by helping them set recovery goals, develop recovery plans, and improve their overall quality of life. This role is distinct from that of a dietician, social worker, or physical therapist, as the recovery coach specifically focuses on the unique challenges and strategies related to overcoming substance use disorders.