Marius M. Hoeper, MD, is deputy director of the Department of Respiratory Medicine at Hannover Medical School, Hannover Germany, where he is also in charge of the pulmonary hypertension (PH) program and senior attending physician at the intensive care unit. As clinician scientist, he has published more than 400 papers in these areas. Professor Hoeper was a task force member/chair at the 3rd, 4th, 5th and 6th World Symposia on PH. He was also an author and Section Editor of the 2009 and 2022 European PH Guidelines and the senior author of the 2015 European PH Guidelines. In 2014, Professor Hoeper received the distinguished Lifetime Achievement in Pulmonary Arterial Hypertension Award from the European Respiratory Society, and in 2016, he received the Oskar award for Medicine. In 2018 and 2019, Clarivate Analytics listed Professor Hoeper as Highly Cited Researcher.