Dr. Cook is an internationally recognized authority on mental health services research, specifically the study of clinical and rehabilitation outcomes of children and adults receiving community-based care. She directs a federally funded research center along with numerous grants and contracts focused on intervention science, psychiatric epidemiology, and outcomes research. She designs and implements innovative programs to enhance the health and behavioral health of vulnerable populations. She works with federal, state and local authorities on behavioral health service system redesign and alternative financing strategies. Her recent work focuses on randomized controlled trials of evidence-based practice treatments for serious mental illness, and outcomes of individuals with co-occurring mental illness and chronic medical conditions. She consults with federal agencies including the National Institutes of Health, Social Security Administration, Department of Labor, Government Accountability Office, Substance Abuse and Mental Health Services Administration, and Veteran’s Administration. She is currently the Principal Investigator for the first national study of the prevalence of psychiatric and substance use disorders in a multi-site cohort of men and women living with HIV/AIDS and HIV-seronegative comparison populations. She is a former member of the NIMH Study Section on Mental Health Services in Specialty Settings, and currently serves as an ad-hoc reviewer for NIH and other federal agencies.