ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS can offer a private ADHD assessment however, 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://psychiatry29505.blog-ezine.com/29336668/why-all-the-fuss-over-adhd-assessment-private