ADHD Assessments From Specialist Psychiatrists Specialist psychiatrists offer private ADHD assessments. They are often able to provide a faster diagnosis and treatment when in comparison to NHS services. They also can offer shared care agreements with GPs for prescription of ADHD medication, where it is required. Adult ADHD diagnosis is a long process that requires a lot of details from the patient. This includes reports from the past. Some doctors are hesitant to refer patients due to thi...