Primary clinicians foster long-term relationships with patients and play key roles in the treatment journey for patients with cancer. Primary clinicians are important members of the multidisciplinary team and are central in coordinating and providing supportive care. The use of immune checkpoint inhibitors in adjuvant/neoadjuvant treatments and metastatic disease requires an awareness of their long-term survival benefits and immune-related adverse events (irAEs). Primary clinicians collaborate with the oncology care team to increase irAE awareness and identify institutional and individualized approaches to manage irAEs.