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 medications under a shared-care agreement https://keeganyhnrw.blogkoo.com/how-to-know-the-adhd-assessment-private-that-is-right-for-you-49451206