ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS can offer an in-person ADHD assessment but it's a lengthy wait. Some patients have waited for up to three years. GPs can refer patients to private clinics or prescribe medications under https://andrebgwci.webbuzzfeed.com/30366311/what-is-adhd-assessment-private-and-how-to-use-it