Gus Castellanos, M.D., retired Neurologist, graduated from the University of Miami Medical School in 1980. He practiced neurology and sleep medicine in Palm Beach County from 1987-2007. He has been a practitioner of mindfulness since 1999 and a teacher since 2009 (mindfulness-based stress reduction and mindfulness-based attention training) trained by the University of Massachusetts Medical School Center for Mindfulness and the University of Miami Neuroscience Lab.

Since 2017, Dr. Gus Castellanos has been a GEN2050® Mindfulness Instructor. His guided meditations allow students to practice being in the present moment, aware of what is happening in that moment as it's happening, with a non-judgmental attitude.