ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS can offer an in-person ADHD assessment however, it's a long wait. Some people reported waiting three years. GPs can refer patients to private clinics or prescribe medications under a shared-care agreement https://andersonapeid.amoblog.com/what-to-look-for-in-the-adhd-assessment-private-to-be-right-for-you-51603665