Dr. Marenco completed his post-doctoral clinical training at UCLA, which included three years in the OCD Intensive Treatment Program at the Resnick Neuropsychiatric Institute and Hospital. There he received training in Exposure and Response Prevention (ERP), a type of behavior therapy for OCD and other anxiety disorders. While at UCLA Dr. Marenco was also trained in classical mindfulness practice and conducted neuroscience research on the therapeutic effects of mindfulness practice on the brain activity of patients with OCD. He was mentored by psychologist and Buddhist monk Dr. Lobsang Rapgay from the UCLA Center for Buddhist Studies in research that included the application of mindfulness practice to cognitive behavior therapy for the treatment of anxiety disorders.