GambitIgnatius Praptoraharjo, Ph.D is a research consultant at the Center for Health Policy and Management (CHPM), Faculty of Medicine, Gadjah Mada University Yogyakarta. He completed his doctoral program in 2010 at the Division of Health Policy Administration of the School of Public Health, University of Illinois at Chicago (UIC) and he was a recipient of the UIC-AIDS International Training and Research Program (AITRP) scholarship, Fogarty International Center, US National Institute of Health. He has worked in areas of HIV Policy and Programming for injecting drug users, male to female transgender, migrant workers and female sex workers since 1993. He spent most of his time working with local NGOs where he developed proposals and implemented AIDS programs for different populations. He was a national technical officer for harm reduction program of the Family Health International (FHI) – Indonesia in 2002-2006. Currently he serves as a Team Leader of The CHPM's Performance Management and Leadership Program for District Health Offices in Papua Province - a USAID-Kinerja funded Project. He also serves as a Senior Researcher at the AIDS Research Center, Atma Jaya Catholic University and a consultant for the National AIDS Commission,Ministry of Health, HCPI-AusAID, UNFPA and UNODC. His research interest is mainly on topics around social network analysis, social determinants of health and health policy particularly on HIV/ AIDS and marginalized populations.