Carlos Umaña is co-president of IPPNW, the International Physicians for the Prevention of Nuclear War (Nobel Peace Prize in 1985) and is part of the International Steering Group of ICAN, the International Campaign for the Abolition of Nuclear Weapons (Nobel Peace Prize in 2017). He is a General Practitioner, former Director of the Department of Health in Costa Rica and former employee of the Costa Rican Social Security Fund (CCSS), where he worked in primary care and as a resident in gynecology and obstetrics. He has studies in clinical research, epidemiology research, gynecology and obstetrics, nutrition, and fine art. He is the founder of the group Artistas por la Paz (2014) in Costa Rica and co-founder of the Peace and Diversity activist group. He currently chairs the IPPNW in Costa Rica and has participated in various other groups of activists for human rights, the environment and animal welfare. He was awarded the Alan Turing Award for LGBTIQ Visibility in 2018 in the Social Organization category. Since 2013, his work has focused on campaigning to raise awareness of the humanitarian impact of nuclear weapons and on building social and political support for the Treaty on the Prohibition of Nuclear Weapons (TPNW).