Dr. Marvin Yglesias Rosales is a physician, specialist in General Surgery, Postgraduate Professor of General Surgery at SEP UCR, previously head of general surgery clinic until 2024. Currently Director of the National Center for Early Detection of Gastrointestinal Cancer and in charge of the organized screening programs for gastric and colorectal cancer of the CCSS. He si also graduated from the Master's in Health Services Administration of UNED.