ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS offers the option of a private ADHD evaluation, but the wait is long. Some patients have reported waiting for three years. GPs can refer patients to private clinics or prescribe medication https://mariogpvzd.blogoscience.com/35939313/7-things-you-d-never-know-about-adhd-assessment-private