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 long wait. Some people reported waiting three years. GPs may refer patients to private clinics or prescribe medication under a shared-care agreement https://raymondvtvef.blogoscience.com/35832769/7-things-you-ve-never-learned-about-adhd-assessment-private