Services & fees

Clinical services for clients

Adult autism assessments

Eligibility: Autism diagnostic assessments are available for women and gender diverse adults aged 25+. Individuals aged under 25 are advised to speak with their GP about referral options to a paediatrician and psychologist under MBS item 82000.

Current availability: Earliest availability is March 2026. As appointment changes are uncommon, I’m unable to offer a cancellation or waitlist option.

Assessments are undertaken on Tuesdays and Wednesdays, usually 12pm - 2pm, either via telehealth or face-to-face in Newport (Melbourne).
No GP referral required, self-referral is sufficient

Comprehensive evidence-based autism diagnostic assessment (with ADHD-screening) and report ($1800) - for women and gender diverse adults

  • Following extensive intake (including several questionnaires assessing ASD, camouflaging, ADHD, mood, trauma), the assessment is conducted over 1 x two-hour clinical interview, via telehealth/Zoom or face-to-face ($900). A 50% deposit is required at the time of booking, and the remainder is due by the day of your assessment.

  • The comprehensive diagnostic report is an additional $900, which includes any supporting NDIS documentation if required. The report invoice is sent approximately two weeks after the assessment, depending on the outcome. Once payment is received, the report will be emailed within 4–6 weeks.

  • Total cost = $1800.

  • NDIS: For those deemed suitable for NDIS access, a functional capacity assessment will be undertaken and included in the report. A letter addressed to the NDIS, to support your access request, will also be provided. This includes detailed support recommendations. These additions are included at no extra cost.

  • ADHD-screening: If ADHD appears likely based on initial screening, executive functioning is explored in more detail, and the interview includes consideration of a potential AuDHD profile (co-occurring autism and ADHD). If ADHD is identified, detailed findings and professional impressions are included in your report, along with the names of recommended psychiatrists for formal diagnosis and ongoing management. This is included within the overall assessment process at no extra charge.

  • Unfortunately a Mental Health Care Plan does not cover the assessment of ASD. If you have private health, you may wish to enquire with your private health fund as to whether you are able to claim your assessment fees. Please contact your insurer about this as we are unable to provide direct advice as all health funds differ.


    Important Information About Assessment Suitability

    Please note: In line with the National Guideline for the Assessment and Diagnosis of Autism in Australia, individuals with complex mental health histories - such as those involving psychosis, substance use, or multiple co-occurring conditions — may be better suited to a team-based (multidisciplinary) assessment rather than an assessment conducted by a sole practitioner.

    If this applies to you, or if you have had extensive involvement with public mental health services for a combination of concerns, we kindly ask that you advise us of this prior to booking. This information will then be carefully reviewed by Dr Katherine Birt to determine whether her service is the most clinically appropriate setting for your assessment needs. In more complex cases, the guideline recommends a multidisciplinary approach.

Re-assessment of current functioning and supporting documentation for NDIS access requests - for women and gender diverse adults

For women and gender diverse adults diagnosed prior to the introduction of DSM-5 criteria, or those experiencing a decline in functioning, Katherine offers reassessment to clarify current support needs. This may also be appropriate where previous diagnostic documentation is insufficient for NDIS purposes, or where the original diagnosis was made by a clinician not recognised by the NDIS as a qualified diagnosing professional (e.g., a General Psychologist).

This process involves extensive intake including assessment of ASD and functional capacity along with a 1-hour clinical interview ($450). Pending the outcome, a report / NDIS support letter with detailed support recommendations is provided ($550). Total cost = $1000.

*Not currently offering therapy / post-diagnostic support

While Katherine is not currently available to take on therapy clients, each assessment includes a comprehensive report with personalised recommendations for neuroaffirming providers and supports tailored to the individual’s needs.