Les Aria, PhD, a pain psychologist who has been practicing for the past 16 years with Kaiser Permanente Medical Group in Northern California, served as the Lead Pain Psychologist for Kaiser Northern California to help redesign the chronic pain workshop curriculum to incorporate modern pain science, mindfulness and Acceptance & Commitment Therapy (ACT). Les specializes in treating psychophysiological disorders/persistent pain and medically unexplained problems. His passion for mind-body interventions promotes a unique style to help patients relate differently to their suffering, and thereby shift them into pain recovery and wellness.