Former Senior Adviser to the Administrator, Centers for Medicare and Medicaid Services. 2007, senior author on a study demonstrating that care in Medicare is highly fragmented, with the average beneficiary seeing multiple primary care physicians and specialists. Serves on several national committees, including the Institute of Medicine's National Cancer Policy Forum, and the Committee on Performance Measurement of the National Committee on Quality Assurance. Chair, Technical Expert Panel that is developing measures of cancer care quality for CMS. Published in medical literature; opinion pieces have appeared in the New York Times, Wall Street Journal, Forbes Online and on National Public Radio. Main research interests cover healthcare policy, particularly as relates to Medicare, racial disparities in cancer care quality, and lung cancer epidemiology. Research examining quality of care for Medicare beneficiaries has demonstrated that blacks do not receive as high-quality care as whites w