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 people reported waiting three years. GPs can refer patients to private clinics or prescribe medication in a shared-care arrangement https://edwincyzgi.blog-kids.com/29923119/a-how-to-guide-for-adhd-assessment-private-from-start-to-finish