Associate Professor of Professional Practice
Room 807
212-851-2245

Marion Riedel

Dr. Riedel trains practitioners in the “harm reduction” approach to drug use, a nonjudgmental technique that respects the rights and individuality of users.


Dr. Riedel has worked as a social worker with adolescents, people living with and affected by HIV/AIDS, and people with problematic use of drugs and alcohol. She teaches, trains, and lectures nationally on the topic of harm reduction. She is a staff trainer in many local organizations using a harm reduction approach, and a clinical harm reduction supervisor in numerous community-based organizations.

Dr. Riedel trains staff extensively on motivational interviewing and is co-investigator on multiple intervention research projects that test the efficacy of MI with various populations to reduce drug and alcohol related harm and/or to increase a range of health improvement behaviors. Research projects include increasing motivation for and access to AIDS Clinical Trials for HIV-positive people of color, including women (Project ACT 2); infusing motivational techniques in a microfinance training and asset development project for women engaged in sex work in Mongolia; increasing motivation to test and treat for HIV in five high-prevalence areas in Brooklyn; and developing motivation to begin medication regimens for HIV-infected persons who are not on medications but reach CDC- recommended markers for doing so.

Dr. Riedel is affiliated with the The People’s Institute for Survival and Beyond and is a member of the Northeast Anti-Racist Alliance. She has trained with the group’s co-founder and other core trainers on anti-racist social work, education, and community organizing. She trains students and agency staff on principles of cultural inclusion, anti-oppressive practice, social justice, and racial identity theory. She is committed to integrating principles of equity into social work practice, intervention, supervision, evaluation, and research. Dr. Riedel holds a BA from New York University, an MSW from Hunter College School of Social Work, and a PhD from the Columbia School of Social Work.