Professor Vargas Bustamante is an Assistant Professor in the Department of Health Services at the UCLA School of Public Health. He teaches HS200B Health Care Financing and Organization and HS209 Health Care for Vulnerable Populations. He conducts research in two fields: i) health care disparities and ii) health policy in developing countries. His health care disparities research focuses on population groups that are overwhelmingly uninsured or that have poor access to health care, predominantly among Hispanics/Latinos and immigrants in the United States. He also specializes in the statistical analyses of disparities in health care access, utilization, quality and insurance coverage. The outcomes of his research have had direct policy applications, particularly since they estimate the share of disparities that can be attributed to socioeconomic and demographic factors and the corresponding part associated to health system variables, such as usual source of care and insurance status. His research on health services in developing countries focuses in two areas: cross-border health care utilization and healthcare privatization and decentralization in middle-income countries, predominantly in Latin America.