Professor Hoyos brings over two decades of clinical and administrative expertise in the mental health field, specifically in the areas of direct clinical practice, program development and supervision through a social justice lens. Some of the populations/areas of expertise include substance abuse, HIV, immigration, political asylum, trauma; and gay, lesbian, bisexual & transgender communities. Currently, Professor Hoyos lectures nationally and internationally on issues of trauma, mental health and public policies. He has a private practice in New York City, treating individuals, couples, and groups; and has done significant work providing training, community organizing, advocacy and program development for the diverse communities. Professor Hoyos currently teaches Adult Psychopathology and Pathways to Wellness at Columbia School of Social Work (CSSW).