ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS offers a private ADHD assessment however, the wait can be long. Some people have reported waiting for up to three years. GPs can refer patients to private clinics or prescribe medication https://privateadhdassessment44172.creacionblog.com/29250430/how-to-make-a-successful-adhd-assessment-private-instructions-for-homeschoolers-from-home