Dr. Margaret Giorgio is a Research Professor with the College of Global Public Health at New York University. As a social and behavioral scientists, Dr. Giorgio's research primarily focuses improving the health of vulnerable populations, and her work emphasizes the use of advanced research design and statistical analysis methodologies to answer complex public health questions. Dr. Giorgio is currently a co-investigator of a 5-year project to evaluate a supportive housing program for high-cost and medically-needy homeless adults. The research uses an RCT design and administrative health data, including hospital billing and Medicaid claims data, to investigate whether the supportive housing program is successful in reducing medical utilization and costs among homeless adults. Dr. Giorgio is also a co-investigator of two HIV surveillance studies conducted among cross-border migrants Cape Town, South Africa. These studies used respondent-driven sampling to identify and recruit men and women to participate in the research. Data collection for both studies, which included biological HIV testing and a behavioral risk-assessment survey, has been completed. Dr. Giorgio is currently analyzing the data and preparing manuscripts for publication.