Dr. Marc Manseau serves as the Chief of Medical Services for the New York State Office of Addiction Services and Supports. Appointed to this role in April 2019, he serves on the agency’s Executive Team and provides medical consultation and leadership on topics related to agency policy, the certified-and-funded addiction treatment provider system, and agency-operated clinical services. A key priority for Dr. Manseau thus far has been to expand access to person-centered care including medications for addiction treatment, both within and outside New York’s addiction treatment system. Prior to joining OASAS, Dr. Manseau served as the Associate Medical Director for Adult Services at the New York State Office of Mental Health. In addition to other responsibilities, he worked to help New York’s mental health system better address co-occurring mental health and substance use disorders. Dr. Manseau graduated with a degree in Human Biology from Brown University, where he also earned a Masters in Public Health. He completed medical school at the Columbia University Vagelos College of Physicians and Surgeons. After graduating from general psychiatry residency training at the New York University School of Medicine, he completed a fellowship in Public Psychiatry at Columbia University. He then worked as an Attending Psychiatrist in the Bellevue Hospital Outpatient Psychiatry Clinic, as well as the psychiatrist/medical director for Bellevue’s OnTrackNY program, an intensive, recovery-oriented intervention for the first-episode psychosis population.  In addition to his clinical responsibilities at Bellevue, Dr. Manseau participated in research related to early intervention for psychosis, schizophrenia, and co-occurring mental illness and substance use disorders including cannabinoid use. Dr. Manseau is currently appointed as a Clinical Assistant Professor of Psychiatry at the New York University Langone School of Medicine, as well as an Assistant Clinical Professor of Psychiatry at the Icahn School of Medicine at Mount Sinai, and works clinically as a per diem psychiatrist at a Federally Qualified Health Center in New York City. Dr. Manseau is certified in General Psychiatry by the American Board of Psychiatry and Neurology and in Addiction Medicine by the American Board of Preventive Medicine. He has conducted research, published, and presented extensively on various public health and policy-related topics, including occupational health, HIV and mental health, homelessness in New York City, integration of behavioral health and primary care services, behavioral health treatment disparities, the role of prevention within psychiatry, cannabinoids and mental health, substance use and schizophrenia, the opioid crisis, and the social determinants of mental health. He is currently a fellow at the American Psychiatric Association and a member of the Preventive Psychiatry Committee of the Group for the Advancement of Psychiatry (GAP), a psychiatric think tank.