Dr. Elliot Marseille is Principal of the firm, Health Strategies International. He has 35 years of senior public health management and research experience and has published widely on the cost-effectiveness of a range of global health diseases and conditions, with a focus on HIV/AIDS. He is the Course Director for Cost-Effectiveness Analysis in Medicine and Public Health, at UCSF. Dr. Marseille is a leading expert on the economics of the emerging psychedelic-assisted therapies to treat a range of psychiatric indications. He consults with the Multidisciplinary Association for Psychedelic Studies (MAPS) in modeling the economics of MDMA-assisted psychotherapy for the treatment of severe, treatment-resistant PTSD; with the Usona Institute in analyzing the cost-effectiveness of psilocybin-assisted therapy to treat major depression; and with John Hopkins University on the cost-effectiveness of psilocybin-assisted therapy for tobacco cessation. Additional interests include understanding the ethical foundations of cost-effectiveness analysis and identifying sound criteria for judging cost effectiveness.