How Much Is A Private ADHD Assessment? If you want to be able to reduce the time it takes to get an ADHD assessment you can do that by opting to pay privately. This option is called Your Right to Choose and is accessible to all registered GPs in England. https://fanning-mouritsen-3.technetbloggers.de/the-most-popular-private-assessments-for-adhd-gurus-are-doing-3-things/