Iwan Ariawan, a physician and biostatistician with over 30 years of experience, particularly in modeling, design, statistical analysis, and data management and computers from the Faculty of Public Health, Universitas Indonesia. He has been involved in various research and input into health program policy formulation in Indonesia. He has extensive experience in processing large government survey data, such as Susenas, SDKI, RISKESDAS, SKI, BPJS data, and other large data. As a researcher, he has provided consultancy and policy advisory services in projects with MOH, WHO, USAID, the World Bank, UNICEF, RTI, PATH and other international partners.