Russell Marks, PhD

Russell Morgan Marks, PhD


Russell Marks, PhD., is a clinical psychologist at Rhode Island Hospital’s Adult Partial Hospital Program. He received his doctorate in clinical psychology from the University of South Dakota and completed his predoctoral residency at the VA Maryland Health Care System/University of Maryland School of Medicine Consortium.

Dr. Marks completed his postdoctoral fellowship through The Warren Alpert Medical School of Brown University, where he received specialized training in acceptance and commitment therapy (ACT) and other behavioral interventions for trauma and stressor-related disorders. His clinical work focuses on the assessment and treatment of these disorders, including post-traumatic stress disorder.

Dr. Marks’s research examines pathoplastic relationships between personality and psychopathology, such as general and specific etiologies in the development of substance use disorders, PTSD, and adoption of health behaviors during the COVID-19 pandemic. His research also examines measurement invariance and psychometric issues relevant to the study of process-based interventions like mindfulness.

Dr. Marks is a member the Association for Cognitive and Behavioral Therapies and the Association for Contextual Behavioral Science, where he previously co-founded and co-led the process-based therapy special interest group (PBT-SIG).



Adult Partial Hospital Program, Rhode Island Hospital
Potter Building (directions)
110 Lockwood St
Providence, RI 02903


  • Post Graduate School:  University of South Dakota School of Medicine
  • Fellowship:  Warren Alpert Medicine School of Brown University
  • Internship:  Veterans Administration Medical Center