ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS offers a private ADHD assessment however, it's a long wait. Some patients reported waiting for three years. GPs can refer patients to private clinics or prescribe medication in a shared-care arrangement https://beauhdsdm.anchor-blog.com/9523211/10-tips-for-adhd-assessment-private-that-are-unexpected