This article describes how the increasing shift to managed care has impacted the treatment of women with breast cancer, from the perspectives of patients and providers. A descriptive exploratory pilot study was undertaken in a comprehensive cancer center in an urban northeastern city of the United States. The use of General Systems Theory is used to describe how the health care system has adapted to recent insurance changes. Qualitative interviews with patients,physicians, nurses, and business office staff reveal that the type of insurance did not affect treatment decisions. Findings from this pilot study, however, reveal that the increasing shift to managed care has resulted in a change in roles for nurses, fragmentation of care, and intangible costs to the patients.