Rui Monteiro de Barros Maciel, doctor, scientist and university professor, appointed to the position of effective member of the Board of Directors, has been a partner of Grupo Fleury since 1983 and a Full Member of the National Academy of Medicine since 2017. He was Full Professor of Endocrinology at Escola Paulista of Medicine, Federal University of São Paulo (EPM / UNIFESP) from 1992 to 2015, where he is currently Professor Emeritus. He graduated in Medicine in 1970 from EPM / UNIFESP, where he was a Resident Physician in Clinical Medicine and Endocrinology, obtained his Master‘s and Doctorate and did his entire teaching and research career, becoming Professor in 1992. He did post-doctorate at the University of California Los Angeles (1976-78) and was Visiting-Professor at Harvard Medical School (1986-87). He supervised around 50 graduate students, now medical leaders in Brazil and abroad, in Master‘s and Doctorate programs. He published more than 250 research papers, wrote about 120 chapters in medical books and edited 6 books. Presented more than 600 conferences in Brazil and abroad. He has been with Fleury since 1979, where he was recruited as a consultant physician in Endocrinology, a position he holds today; he was Director of Service (1983-86 and 1988-95), Medical Director (1995-2010), Director of Organizational Culture (2011-19) and has been a Member of the Board of Directors since 2019. He continues to play a role in the Company‘s Organizational Culture, where he contributes to defining and cultivating the values, traits and essence of Grupo Fleury for the diverse group of employees of national geographic scope, with the purpose of disseminating a vigorous culture, oriented to the patient and provider of information. best solution in medicine.