Panel on Treatment Resistant Conditions

Ziv J. Cohen, MD, is the Founder and Medical Director of Principium Psychiatry, a multidisciplinary psychiatric company specializing in mood and anxiety disorders, interventional psychiatry, and forensic psychiatry. A board-certified psychiatrist and forensic psychiatrist, Dr. Cohen has particular expertise in the evaluation and treatment of complex mood and anxiety disorders, including treatment-resistant depression.

Dr. Cohen founded Principium Psychiatry to provide sophisticated, evidence-based psychiatric care that integrates psychopharmacology, psychotherapy, measurement-informed treatment, and advanced interventions including TMS, ketamine, Spravato, and ECT. Principium also provides forensic psychiatric evaluations, bringing rigorous diagnostic assessment and psychiatric expertise to legal and occupational questions.

In addition to his clinical and forensic work, Dr. Cohen is involved in physician education, quality improvement, and the development of clinical systems that improve outcomes for patients with complex psychiatric illness. His teaching focuses on practical, evidence-based decision-making in mood disorders, anxiety disorders, treatment-resistant depression, interventional psychiatry, and forensic psychiatry.

Dr. James Murrough is Professor of Psychiatry and Neuroscience, Vice Chair for Clinical Research in the Department of Psychiatry, and Director of the Dennis S. Charney, MD, Depression and Anxiety Discovery Center at the Icahn School of Medicine at Mount Sinai in New York. He has made major contributions to biological psychiatry and clinical neuroscience, particularly through his work advancing ketamine and other novel therapeutics for treatment-resistant depression (TRD) and posttraumatic stress disorder (PTSD), and is internationally recognized for his research in depression, anxiety, and PTSD. He is a Fellow of the American College of Neuropsychopharmacology (ACNP), and his honors include the Joel Elkes Research Award from ACNP, the A.E. Bennett Award from the Society of Biological Psychiatry, and the Paragon Award for Research Excellence from the Doris Duke Foundation. He sits on the Scientific Council of the Brain & Behavior Research Foundation and serves as Vice Chair of the Scientific Council of the Anxiety and Depression Association of America. Alongside his research, Dr. Murrough maintains an active clinical practice and is an avid mentor to trainees and junior faculty.

Joseph Diehl, PhD, is a postdoctoral fellow in the Psychedelics and Contemplation Lab at McGill University, where he works with Drs. Kyle Greenway and Nicolas Garel, developers of the Montreal Model of ketamine-assisted psychotherapy for treatment-resistant depression. He received his PhD in clinical psychology from Duke University and completed his predoctoral internship at Weill Cornell Medicine/NewYork-Presbyterian. His clinical training includes DBT, behavioral activation, and mindfulness-based cognitive therapy, and his research examines the processes, such as mindfulness, perseverative thinking, and the therapeutic alliance, that help explain who benefits from psychedelic and ketamine treatments and why. His recent articles include a process-based therapy framework for psychedelic-assisted psychotherapy and of a study of the therapeutic alliance in MDMA-assisted therapy for social anxiety disorder, and he created the Montreal Model's first online clinician training module.