The investigators want to understand if it is helpful for patients with SMI to be connected to a psychiatrist and case manager when cancer is diagnosed. Optimizing psychiatric symptoms and facilitating communication between the patient, the oncology team, and mental health providers may improve care. The goal is to pilot a pragmatic intervention for patients with cancer and SMI that can be integrated into cancer care, is acceptable to patients and oncology clinicians, and may promote the delivery of stage-appropriate cancer treatment to an underserved population.