Maree was awarded the University of Sydney's Faculty of Medicine and Health's inaugural Distinguished Professor Award in 2023. Maree was announced as a Companion of the Order of Australia in the Australia Day 2018 Honours List, awarded a Westpac/Australian Financial Review 100 Women of Influence (Innovation), and awarded an Australian Museum Eureka Prize for Outstanding Mentor of Young Researchers. Maree has made a major contribution to Australia’s health and medical research effort in the field of mental health and substance use. In particular, she is known nationally and internationally for her research on the comorbidity between mental health and substance use disorders.