A PMHNP is managing a 56-year-old patient with bipolar II disorder and type 2 diabetes. The patient's PCP prescribes metformin and an ACE inhibitor. The PMHNP wants to start quetiapine for bipolar depression but is concerned about metabolic effects overlapping with the patient's diabetes management. The PCP has not been informed of the psychiatric treatment plan. The PMHNP considers the best approach to interprofessional collaboration.