The Advanced Practice Provider (APP) Oncology Fellow is a Nurse Practitioner or Physician Assistant participating in a structured postgraduate fellowship designed to support the transition into a specialty oncology practice. Through supervised clinical rotations, mentorship, and oncology-focused education, the fellow develops competency in the evaluation, treatment, and longitudinal management of patients with cancer across inpatient and outpatient settings, including solid tumors, hematologic malignancies, and treatment-related complications.