Dr. Chang holds a PhD in the evaluative clinical sciences and is on the faculty at The Dartmouth Institute where she is an expert on observational studies of healthcare in the Medicare population. Her main areas of expertise are in the study of regional variation—spending many years as part of The Dartmouth Atlas team—and the relationship between physician supply and patient outcomes. She was the central investigator on the Primary Care Service Area (PCSA) project (Goodman, PI), funded by the Health Researches & Services Administration (HRSA), to define geographic areas for local primary care markets. Primary Care Service Areas are used by federal and state governments to evaluate primary care resources, especially in underserved areas. Using her extensive expertise in Medicare and Medicaid claims analysis, she also has studied care delivery patterns of pediatric care, primary care, cancer care, and end-of-life care among vulnerable populations, and explored risk effects of prescription use among older adults. She is co-investigator of “Technology Diffusion, Health Outcomes and Healthcare Expenditure” (Skinner), “Causes and Consequences of Healthcare Efficiency” (Skinner), “Transforming Nursing Home Care under the ACO Model (Colla & Bynum), “Evaluating the Formation and Performance of ACOs, Optimizing the Management of Dual Eligible Beneficiaries” (Colla), “Mental Health Care under New Payment Strategies" (Meara), and “Identifying Cascades of Low-Value Care and the Organizational Practices That Prevent Them” (Colla).
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