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The main focus of my work involves measuring and improving quality of care, assessing outcomes, evaluating spending, and characterizing the value of cancer care.  Current major research projects include evaluating the quality of care offered to minority and economically disadvantaged women with breast cancer using linked cancer registry-Medicaid claims data, developing algorithms that identify patients with recurrent cancer using claims/electronic health record data, and studying the impact of initial treatment decisions for DCIS on the odds and type of recurrence.  Recently, I have published on the adoption of gene expression profile testing and its association with the use of chemotherapy among women with hormone-receptor positive breast cancer.  The long term goals of my work are to understand how healthcare policies, systems of care, and reimbursement models improve quality, impact outcomes, and increase value.