I have a strong interest in understanding how the brain interacts with both external and internal environments, particularly regarding the neuroplasticity of developing brains. Key influences in a child's external environment include parents, peers, and educational institutions. This understanding motivates me to create pathways that foster meaningful relationships between children and their adult caregivers, ultimately supporting self-formation and addressing emotional challenges and mental health issues. I possess extensive experience in the application of psychopharmacology for various mental health conditions in children, including depression, anxiety disorders, bipolar disorder, psychosis, obsessive-compulsive disorder, and schizophrenia.

Dr Michael Mackertich is a Child and Adolescent Psychiatrist with experience across both public and private mental health services. He completed his medical degree at the University of Sydney and has worked and trained across a variety of metropolitan and regional hospital settings throughout New South Wales whilst becoming a Fellow of the Royal Australian and New Zealand College of Psychiatrists (RANZCP). He holds an Advanced Certificate in Child and Adolescent Psychiatry. Dr Mackertich grew up on the North Shore and now lives in the area with his young family, bringing a personal understanding of the community he supports. Dr Mackertich sees children, adolescents, and their families across a wide range of mental health concerns. He offers thorough psychiatric assessments and creates management plans tailored to each individual’s unique needs and circumstances. Committed to working collaboratively, he partners closely with families, schools, and other professionals to provide coordinated care.

Dr Sonntag is a psychiatrist specialising in the care of young people aged between 12 to 25. She is experienced in treating a range of mental health issues in adolescents and young adults, including mood and anxiety disorders, ADHD, OCD, and stress-related conditions. She is highly experienced in supporting young people through dynamic life transitions and adapting treatment plans appropriately, from the start of high school all the way through to their young adulthood.

Child, family and Youth Psychiatrist

Child and Adolescent Psychiatrist