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 patients reported waiting for three years. GPs can refer patients to private clinics or prescribe medication in a shared-care https://iampsychiatry55801.bloggazzo.com/28884015/adhd-assessment-private-s-history-of-adhd-assessment-private-in-10-milestones