ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS can provide a private ADHD assessment but it's a lengthy wait. Some have reported waiting for up to three years. Doctors are able to refer patients private clinics or prescribe medication https://trevorclruy.is-blog.com/36101065/why-adhd-assessment-private-should-be-your-next-big-obsession