Dr Johnson is a Senior Lecturer at the University of Melbourne in the discipline of General Practice and is in active clinical practice as a General Practitioner. Dr Johnson’s research has a strong focus on primary mental health care. She has published on recovery from depression, mental health treatment plans and the role of general practice in providing care for common mental disorders. In 2018 she was a member of both the Mental Health Reference Group and the Psychiatry Clinical Committee of the Medicare Benefits Review Taskforce, where she provided advice to government about modernising the MBS to better align it with evidence-based practice. In 2019 she was called as a witness to the Royal Commission into the Victorian Mental Health System. Dr Johnson represents the Royal Australian College of General Practitioners on the Equally Well Alliance.