Claude Ann Mellins PhD, is a clinical psychologist with expertise in psychosocial aspects of HIV disease, substance use, and stress in children, adolescents, young adults and families in the US and globally. She is a Professor of Medical Psychology (in Psychiatry and Sociomedical Sciences) at Columbia University Medical Center (CUMC), as well as a research scientist and co-director of the HIV Center for Clinical and Behavioral Studies in the Division of Gender, Sexuality, and Health at the New York State Psychiatric Institute and CUMC. She is also Co-Director of the Office of Clinical Psychology for psychologists functioning in clinical roles throughout CUMC. For 26 years, Dr. Mellins has been the PI or Co-I of foundation and federally-funded research projects in the US and internationally examining neurodevelopment, mental health, and sexual and drug risk behavior in vulnerable population of children, adolescents, and young adults, particularly those affected by HIV, poverty and substance abuse. Her intervention work has also focused on medical adherence in HIV-infected youth and adults. In addition, Dr. Mellins co-founded and co-directed the Special Needs Clinic at CUMC, one of the first and largest mental health clinics for HIV-affected women, children, and families.