Dr Marco Marchionni

Dr Marco Marchionni is a highly experienced Consultant Psychiatrist who specialises in working with children, adolescents, and young adults with ADHD, autism, and related neurodevelopmental conditions. He also has extensive experience in managing complex ADHD alongside other mental health challenges such as mood disorders, PTSD, and substance misuse.

Dr Marchionni completed his medical training in Italy and went on to work across a wide range of specialties, including neurosurgery, neuropathology, and adult psychiatry, before focusing on child and adolescent psychiatry. He spent four years in a specialist NHS ADHD unit, deepening his expertise in neurodevelopmental care.

With a strong background in both neuroscience and psychiatry, Dr Marchionni takes an integrated, whole-person approach to diagnosis and treatment. His care is guided by a belief in meeting each individual where they are—emotionally, psychologically, and biologically—and helping them reach their potential in a supportive, compassionate way.

He is described by colleagues and patients alike as thoughtful, dedicated, and deeply client-focused. Dr Marchionni is fluent in both English and Italian, and is currently available for online appointments.