How to Get an ADHD Assessment From a Private Provider It could take months or even years for an ADHD assessment from the NHS. This is due to a lack of specialists and high demand for services. Private clinics offer a more efficient and more complete option than the NHS. https://holdenfwoym.ampblogs.com/how-to-design-and-create-successful-adhd-diagnosis-private-strategies-from-home-66589853