ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS offers an in-person ADHD assessment but it's a lengthy wait. Some have reported waiting for 3 years. Doctors can refer patients to private clinics, or prescribe medication under a shared-care agreement https://iampsychiatry31008.blogunteer.com/29191173/adhd-assessment-private-tips-from-the-top-in-the-industry