Currently, he is a senior researcher in the Aging, Disability, and Long-Term Care Program at RTI International, an independent, nonprofit institute that provides research, development, and technical services to government and commercial clients worldwide. His current work focuses on evaluation of the Centers for Medicare & Medicaid Services Initiative to Reduce Avoidable Hospitalizations among Nursing Facility Residents. He is also an expert on emerging long-term care issues in China. A social demographer by training, he received his master's and doctoral degrees in sociology from Brown University and a bachelor’s degree in sociology from Peking University.