Joseph is a Professor at Professor at Australian Centre for Evidence Based Aged Care, La Trobe University, and a practising senior consultant specialist in geriatric medicine with over 30 years of experience.

Joseph has a Fellowship from the Royal Australasian College of Physicians, a Doctorate of Philosophy in Epidemiology and Health Services Research (Monash University), a Fellowship from the Australian Faculty of Public Health Medicine and a Graduate Certificate in Higher Education.

Joseph was an inaugural and founding member of the clinical team assisting the State Coroner’s Office in the 2000s, investigating the system failures associated with health and aged care deaths, respectively. Joseph’s ongoing research is investigating approaches to reducing harm to older persons and improving their quality of life.

Joseph has also been called as an expert witness for criminal cases into elder abuse and coroners’ cases into the quality of care provided to nursing home residents, including the inquest into Oakden. Joseph has also provided evidence and been cited in the Australian Law Reform Commission into Elder Abuse, Carnell and Paterson Report, the Commonwealth Senate Inquiry for protecting residents from abuse and poor practices, the House of Representatives Inquiry and more recently, the Royal Commission into Aged Care Quality and Safety.

Professor Ibrahim is the lead author of the influential report “Recommendations for prevention of injury-related deaths in residential aged care services.” This work has informed approaches for protecting residents from abuse and poor practices and ensuring proper clinical and medical care standards are maintained and practised. This report followed the first comprehensive national study of injury-related deaths among nursing home residents in the world, considered one of the Top 10 influential research studies in 2017, published in the Medical Journal of Australia.

Joseph was one of three people recognized by the Sydney Morning Herald Good Weekend's “People Who Mattered 2019: Health”.

Joseph's community reach is evident in his regular contribution to media (Television, Radio, Podcasts, Online), and he has authored 25 articles in “The Conversation”, an independent source of web-based open-access news.

Outside of university work, Joseph is a producer, co-writer and narrator of four short films about ethical issues in persons with dementia and ageing and an advocate for aged care reform.