ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS can provide an in-person ADHD assessment but it's a lengthy wait. Some have reported waiting for up to three years. Doctors can refer patients to private clinics or prescribe medication under https://caidenufnva.livebloggs.com/35622720/why-adhd-assessment-private-is-everywhere-this-year