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 can be long. Some patients have waited for 3 years. GPs may refer patients to private clinics or prescribe medications https://fernandoeouzd.thezenweb.com/adhd-assessment-private-tips-that-will-change-your-life-67047409