This book, Atlas: History and Evolution of Health Professions in Puerto Rico (1952-2022), aims to explore the development of medical professions and healthcare institutions over the past seventy years. By examining key historical events, influential figures, and institutional transformations, this work seeks to provide a comprehensive overview of how Puerto Rico’s healthcare system has adapted and evolved. From the pioneering efforts of Bailey K. Ashford to the establishment of modern healthcare facilities and Governor Pedro Rosselló’s Reforma de Salud, the history of health professions in Puerto Rico reflects a continuous pursuit of excellence and innovation in medical education and public health.