Our Specialists

Our Psychology and Psychiatry Specialists

  • Dr Linda Byrne

    BAppSc (Honours), MPsych, Dpsych


    Dr Linda Byrne is a psychologist at Precision Brain Spine and Pain Centre. Dr Byrne specialises in the neuropsychological assessment of adults, children and adolescents with psychiatric, neurological, and educational difficulties.

    Dr Byrne has over 15 years of clinical, research and teaching experience in the areas of neuropsychiatric disorders, neurology, brain injury, geriatric medicine and neuropsychological rehabilitation. Currently, Dr Byrne shares her time between Precision Brain Spine and Pain Centre and her work as an academic at Deakin University. Linda has completed a Masters in Clinical Neuropsychology and a PhD in Cognitive Neuropsychology focussing on memory functioning in Schizophrenia. 

    Dr Byrne has recently published a book chapter on neuropsychological assessment of schizophrenia and another on the neuroscientific aspects of eating disorders. 

    Dr Byrne frequently presents her research at the national and international level and provides research and training workshops on psychological assessment.

  • Dr Katherine McQuillan



    Dr Katherine McQuillan is a psychiatrist at Precision Brain Spine and Pain Centre, with a particular interest in psychiatric symptoms and disorders arising in the context of other medical conditions.

    Dr McQuillan completed her medical degree at the University of Sydney in 2003, following a Bachelor of Medical Science, with Honours Class I. During her medical degree, she undertook further research in neuroimaging, under the supervision of Professor John Watson (neurologist, Neuropsychology Unit, Royal Prince Alfred Hospital) and Professor Gary Egan (physicist, University of Melbourne and the Howard Florey Institute), leading to a Doctor of Philosophy.

    Dr McQuillan was a junior medical officer at Royal Prince Alfred Hospital, before commencing psychiatric training in 2006, within the Central Sydney Area Health Service. Her Advanced Training in psychiatry focussed on Consultation-Liaison Psychiatry, an aspect of psychiatry addressing conditions and their management that arise in the context of medical and surgical illnesses. As part of her Advanced Training, she gained experience in the specialities of chronic pain, perinatal psychiatry, eating disorders and addiction disorders.

    In 2011, she was awarded Fellowship of the Royal Australian and New Zealand College of Psychiatrists.

    On completion of her psychiatric training, Dr McQuillan worked as a Consultation-Liaison psychiatrist at Royal Prince Alfred Hospital and Manly Hospital. Whilst at Manly Hospital, she established a dedicated Consultation-Liaison Service and a Perinatal Psychiatry Outpatient Clinic.

    In 2012, Dr McQuillan moved to Melbourne and commenced working in the Pain and Palliative Care Department, at the Peter MacCallum Cancer Institute.

  • Georgina Speak

    BAppSc (Honors), Mpsych (Clinical)


    Georgina Speak is a Psychologist at Precision Brain Spine and Pain Centre and Precision Ascend. She has experience working in various psychological settings including hospitals, schools and community services. She has worked with children and adults with a wide range of psychological presentations including anxiety, depression, chronic pain, relationship issues, stress, emotion regulation problems and adjustment problems. Georgina has completed a Masters in Psychology (Clinical) and is currently completing her Clinical Registrar program. Georgina’s Honors thesis focused on identity and breast cancer survivorship and her Master’s thesis focused on identity development in adults with Chronic Fatigue Syndrome and Fibromyalgia. Consequently, she has a special interest in pain, identity and personal wellbeing.