Expert Neurodevelopmental Care for Every Age
Specialist ADHD, Autism, Dyslexia and DCD assessments for children and adults — trusted by families across Oxfordshire and Guernsey.
We are officially award-winning
On Friday 5th June 2026, Dr Cassie & Associates were named SME of the Year at the 30th Oxfordshire Business Awards — recognising our team's dedication to compassionate, family-centred neurodevelopmental care across Oxfordshire and Guernsey.
Read the StoryYour pathway, made clear
Not sure where to begin? Pick the description that sounds most like you — each one leads to a dedicated page with the right services, the relevant fees, and a clear next step.
For Parents & Carers
You're worried about your child's development, behaviour, or learning — and you're not sure where to start. We'll help you work out what matters first.
Start Here →For Adults Seeking a Diagnosis
You think you might have ADHD, Autism, or both. Maybe you've wondered for years. Start here for a clear, supportive pathway.
Start Here →For Those Already Diagnosed
You have a diagnosis and need ongoing support — medication, therapy, school help, or advocacy. Whatever stage you're at, there's a clear next step.
Start Here →
A Warm, Experienced Team Dedicated to Your Family
We're a warm, experienced team providing friendly, family-centred assessments and ongoing support for children, young people, and adults across the spectrum of neurodiversity — including Autism, ADHD, DCD, and Dyslexia.
Our multidisciplinary team delivers personalised, evidence-based care, including therapy and medical support where appropriate. From our welcoming Oxfordshire clinic, alongside our services in Guernsey, we focus on each individual's strengths and offer practical, tailored support to help every person thrive at each stage of life.
What we stand for
The principles that shape every assessment, conversation, and ongoing care plan.
Trusted by Families
Across Oxfordshire & Guernsey
"We found Dr Cassie's team to be very thorough and professional. The wait times for our son to be seen were comparably short and the report was comprehensive and extremely helpful."
"From the very first phone call, the team made us feel welcome and at ease. The assessment was conducted with real sensitivity and the follow-up support has been invaluable."
"I was diagnosed with ADHD as an adult and it has been life-changing. The team were incredibly understanding and the whole process was handled with great care and professionalism."
"The occupational therapy sessions have made a real difference to our daughter's confidence and daily routine. The therapist truly understands neurodevelopmental needs."
"Extremely professional and friendly practice. The report was detailed and really helped us understand our child's needs. School has been so much more supportive since."
Your Assessment Journey
From first enquiry to ongoing support, we guide you through every step with clarity and compassion.
Initial Enquiry
Contact our team to discuss your concerns. We'll help you understand which assessment is right for you or your child.
Assessment
A thorough, face-to-face evaluation at our Wallingford clinic with one of our specialist clinicians.
Detailed Report
A comprehensive written report with diagnosis, recommendations, and practical strategies for home and school.
Ongoing Support
Follow-up appointments, medication management, therapy sessions, and SEN guidance as needed.
Common Questions
Everything you need to know before booking. Can't find your answer? Get in touch and we'll help.
Most assessments take between 2-4 hours depending on the type. ADHD and Autism assessments may involve multiple appointments to ensure a thorough evaluation. We'll give you a clear timeline at your initial consultation.
Yes. We have a dedicated adult clinic offering ADHD and Autism assessments, medication consultations, occupational therapy, and sensory needs evaluations for adults of all ages.
We pride ourselves on shorter wait times compared to NHS referrals. Most families are seen within a few weeks of their initial enquiry. Contact us for current availability.
No GP referral is needed. You can contact us directly to arrange an assessment. We welcome self-referrals from parents and adults seeking diagnosis and support.
Yes. Our assessments follow NICE guidelines and are conducted by experienced, registered clinicians. Reports are widely accepted by schools, local authorities, and NHS services for EHCP applications and ongoing care planning.
We're based at The Stables, Howbery Park, near Wallingford, Oxfordshire. The site has ample free parking and is easily accessible from the A4130.