how much does private adhd assessment cost Much Does an ADHD Assessment From a Private Clinic Cost? A thorough assessment is vital in determining the cause of ADHD. This involves taking a thorough overview of your personal background. Additionally, a certified mental health expert will also examine your symptoms to ensure that they meet the requirements for ADHD. Some providers offer pro bono or sliding scale assessments. You can find them on the internet or asking your physician for the r...