Provider empathy is a crucial component in establishing therapeutic provider-patient relationships. The benefits of increased perceptions of empathy can support patient psychological adjustment to their cancer as well as patients' comfort and confidence in disclosing to providers, ultimately promoting patient engagement. Guided by the disclosure decision-making model, this manuscript explores how perceptions of empathy influence patient psychological adjustment and how those variables influence patient disclosure efficacy. The model ultimately predicts patient sharing and withholding of information during the medical interaction. This study tested a mediation model to investigate how current (n = 111) and former (n = 174) breast cancer patients' psychological adjustment mediates the relationship between patient perceptions of oncologist empathic communication and efficacy to disclose health information to their oncologist and their disclosure enactment in sharing and withholding. Overall, former patients compared to current patients had more positive perceptions of their oncologist's empathic communication, had better psychological adjustment, felt more self-efficacy to disclose to their oncologist, and shared more and withheld less information from their oncologist (p < .05 in all cases). Structural equation modeling revealed good fit to the data for both current and former patients such that more perceived empathic communication was associated with more efficacy for disclosure, which was associated with more sharing and less withholding. Additionally, there was an indirect relationship from perceptions of empathic communication to disclosure efficacy through patients' psychological adjustment to the diagnosis. Results reinforce the importance of providers' empathic communication for cancer patients' psychological adjustment because patient sharing and withholding of information remain crucially important to achieving holistic care across the cancer trajectory.