Andrea is a Fellow of the Royal Australasian College of Physicians (FRACP). She graduated in Medicine (MD) from the University of Lübeck (Germany) and was registered in The Netherlands as Specialist in Internal Medicine-Geriatrics and was appointed Full Professor of Gerontology at Vrije Universiteit Amsterdam (The Netherlands) in 2013. She was the head of Geriatrics at the Vrije Universiteit Medical Center and Professor Maier served as Divisional Director of Medicine and Community Care at the Royal Melbourne Hospital, Australia, and as Professor of Medicine and Aged Care at the University of Melbourne, Australia.

She continued her career at the National University of Singapore as Director of the Centre for Healthy Longevity and her research focuses on unraveling the mechanisms of ageing and age-related diseases to bring diagnostics and interventions to optimize health into clinical practice. She is heading international longitudinal cohort studies and geroscience interventions. She has published more than 400 peer-reviewed articles, achieving an H index of 72, spearheading the significant contributions of her highly acclaimed innovative, global, multidisciplinary @Age research group.

In 2022, she co-founded the first evidence based Healthy Longevity Medicine Clinic in Singapore – Chi Longevity and joined NU as Chief Medical Officer. She is the past President of The Australian and New Zealand Society for Sarcopenia and Frailty Research, the Founding President of the Healthy Longevity Medicine Society and serves as selected Member of The Royal Holland Society of Sciences and Humanities, Fellow of the Atria Academy of Science and Medicine, and Academy for Health and Lifespan Research.