Concordance of patient-reported symptoms and provider-documented symptoms is necessary for appropriate patient care and has clinical implications for research. This study compared patient-reported symptoms (pain, pruritus, edema, and fatigue) following radiotherapy for breast cancer with provider assessments. Underrecognition of at least one symptom occurred in more than 50% of patients. Underrecognition was more common in Black patients and those seen by male physicians. The authors suggest that interventions to improve communication between providers and patients may not only improve outcomes but also reduce racial disparities.