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 assessment However, the wait is long. Some patients have reported waiting for three years. Doctors can refer patients to private clinics or prescribe medications https://ukpsychiatry76016.dbblog.net/3127860/the-reasons-adhd-assessment-private-is-everywhere-this-year