ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS offers an individual ADHD evaluation However, the wait is long. Some patients have waited for 3 years. Doctors can refer patients to private clinics or prescribe medication through a shared-care agreement https://jeffreyyeecz.shotblogs.com/this-is-the-history-of-adhd-assessment-private-in-10-milestones-43940684