Psychological Therapy, Autism & ADHD Assessment Services in Perth

A uniquely personal boutique service experience.

  • Individualised Therapy
  • Autism, ADHD & SLD Assessment
  • Gain diagnostic clarity through assessment
  • Develop supportive coping strategies in treatment
  • Strengthen your sense of self and connections with others
Connected Families

Mental Health Vulnerability

Are you struggling with mental health difficulties such as depression, anxiety or life stressors? Do you find it difficult to manage your emotions, thoughts or behaviours? Are these issues affecting your relationships, work or daily life?

Mental health problems can contribute to significant emotional pain and distress, impacting aspects of living. Accompanying feelings of isolation and overwhelm can exist, as well as physical symptoms. Millstream Psychology offers an emotionally safe and confidential space to explore your experiences using evidenced therapies and techniques. Clinicians can support you with your goals including promotion of self-management skills, helpful coping skills, and increased emotional resilience.

Diagnostic Uncertainty?

Are you or a loved one struggling with symptoms that may be related to neurodivergence? Are you querying autism, ADHD, or learning difficulties? Do you find relationships or communication difficult? Is learning and focusing difficult? Unsure of how to understand, manage or explain these challenges?

Unclear symptoms can significantly impact daily life, causing frustration, confusion, and difficulty in personal, academic, or work-related settings. Without comprehensive assessment to guide support needs, these challenges may persist, affecting self-esteem, relationships, mental health and long-term success.

Millstream psychology specialises in neurodevelopmental assessment, follows national assessment guidelines and engages in comprehensive assessment processes, including daycare/school visits. 

Understanding Neurodivergence

Millstream Psychology Services


Qualified & Professional

Clinically trained psychologists and Skilled Occupational Therapists

gold standard

Gold Standard Assessment

Assessment processes adhere to National Guidelines and Gold Standard processes


Individualised Services

Clinicians link with specialists & schools to align multi-contextual strategies.

Treatment Services:

  • Children, Adolescents, Adults & Families
  • Depression, Anxiety, Panic, Grief
  • Trauma and Stressor related conditions
  • Identity & Addiction
  • Supporting those living with neurodivergence
  • Better Access Initiative Treatment
  • NDIS Self-Managed and Plan-Managed Treatment Services
  • Private Health Care Fund Treatment Services
Assessment Services:
  • Autism psychological assessment for children, adolescents and young adults.
  • ADHD Assessment for children.
  • Cognitive Assessment for all ages.
  • Learning Difference Assessment for children & adolescents.
  • Functional Assessment of Capacity
  • Dyslexia, Dysgraphia, Dyscalculia, Giftedness
  • Diagnostic Reporting

Frequently Asked questions

Medicare Rebates may apply for individuals under age 25 years referred by a Paediatrician or Psychiatrist. Rebates do not apply with GP referrals.

Small Medicare rebates apply only for assessments administered directly with the child (e.g., a maximum of two).

Check with your Private Health Care provider for rebates.

Millstream Psychology accepts GP and Paediatrician referrals for ADHD or ASD psychological assessment.  

The Austim Spectrum Disorder (ASD) National Assessment Guidelines were updated in 2023. Under the new guidelines, a Millstream Psychology Clinical Psychologist can provide a Lead Practioner Diagnostic Evaluation in collaboration with a Paediatric Medical Practitioner when there are no presenting diagnostic complexities. When complex assessment considerations exist, a consensus team, including a Speech Pathologist, will be initiated.

Under the Better Access Initiative, you can choose any Psychologist you wish to engage in services with, despite whom the GP has addressed the referral to.

Accredited & Affiliated

Australian Health Practitioner Regulation Agency
Western Australian Autism Diagnosticians’ Forum (WAADF)

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Neuropsych Assessment