Don Marks, Psy.D., is a clinical health psychologist specializing in strategies for living with chronic pain and advanced illness. His work on psychological interventions for chronic pain has led to research regarding sport injury and athlete psychological well-being. He is also a marriage and family psychologist, working primarily with couples and families facing medical illness. Dr. Marks completed both the professional practicum and internship in mindfulness-based stress reduction (MBSR) at the Jefferson-Myrna Brind Center of Integrative Medicine of Thomas Jefferson University Hospitals. He completed his postdoctoral fellowship and served as a clinical instructor in psycho-oncology and palliative medicine at The Ohio State University Medical Center. He has been a member of the Association for Contextual Behavioral Science (ACBS) since 2005, and he has served as president of the organization’s Greater New York chapter.