Dr. Ioannou earned his M.D. degree from St. Georges University School of Medicine. He completed an Internship in Internal Medicine at The Methodist Hospital in Brooklyn, and then completed his Residency in Psychiatry at SUNY-Downstate. He stayed on at Kings County Hospital beginning with a position in the HIV Program, where he was in charge of the Psycho-social services and as a faculty member of the AIDS Education and Training Center. He assumed a series of responsibilities at Kings County Hospital within a variety of Public Psychiatry services before moving to Long Island, where he held the position of Medical Director of Substance Abuse Services at Glen Cove Hospital. He eventually came to NUMC, where he was Vice Chairman of Clinical Services for the Department of Psychiatry until moving to Stony Brook University Hospital as Director of Residency Training for General Psychiatry. In addition to his work in Public Sector psychiatry and work with the SPMI population, he has maintained his interest in psychodynamic psychotherapy and is a member of the CJ Jung Institute and has completed training in Meaning Centered Psychotherapy. He teaches both Nassau University Medical Center and Stony Brook psychiatric residents. He also supervises psychiatric residents in providing insight oriented psychotherapy and supportive expressive psychotherapy. He is a Clinical Assistant Professor of Psychiatry at Stony Brook University and has presented at a variety of conferences with a focus on Ethics, Historical Context of the Mental Health System and the History of Opiate Use in the United States.