Dr. González is the Director of the Division of Addiction Psychiatry and Associate Professor in Psychiatry. Dr. Gonzalez is board certified by the American Board of Neurology and Psychiatry in Addiction Psychiatry. He is originally from Colombia and after receiving his Medical Degree, he trained in psychiatry at the Colegio Mayor de Nuestra Señora del Rosario, School of Medicine in Bogotá-Colombia. He obtained a Diploma degree in Addiction Behaviour (DAB) at the National Addiction Center, Institute of Psychiatry, University of London. He completed his second residency in psychiatry in the US that was followed by a Substance Abuse Fellowship at Yale School of Medicine. After working as faculty in the Division of Substance Abuse at Yale University, he joined the Department of Psychiatry at UMass in 2008, and since then led the development of the Addiction Psychiatry Fellowship, the Addiction and Comorbidity Treatment Service (ACTS) and he is a NIDA funded clinical investigator. His research has focused on neurobiology and pharmacotherapy for the treatment of cocaine and opioid dependence. He is the author of numerous peer-reviewed papers and book chapters. He has presented at National and International conferences on issues related to treatment of substance abuse.