Patient-centered care is an important aspect of high-quality care. Health informatics, particularly advances in technology, has the potential to facilitate, or detract from, patient-centered cancer care. Informatics can provide a mechanism for patients to provide their clinician(s) with critical information and to share information with family, friends, and other patients. This information may enable patients to exert greater control over their own care. Clinicians may use information systems (e.g., electronic medical records) to coordinate care and share information with other clinicians. Patients and clinicians may use communication tools and information resources to interact with one another in new ways. Caution in using new information resources is warranted to avoid reliance on biased or inappropriate data, and clinicians may need to direct patients to appropriate information resources. Perhaps the greatest challenge for both patients and providers is identifying information that is high quality and that enhances (and does not impede) their interactions.