Dr John Casimir Janssen

Contact information

T: Secretary 020 3315 3358
E: john.janssen@chelwest.nhs.uk




Neurology, TIA, Memory Disorders and Dementia

Professional expertise

  • General Neurology
  • TIA and Stroke
  • Memory disorders
  • Dementia


Dr John Janssen is Clinical Lead for TIA, Deputy Lead for Stroke; Stroke Thrombolysis at Charing Cross Hospital. Dr Janssen qualified from Charing Cross and Westminster Medical School in 1993. His research for his MD thesis into familial Alzheimer's Disease was performed at St Mary's Hospital and the Institute of Neurology, Queen Square. His specialist neurology training was at the National Hospital for Neurology and Neurosurgery, Queen Square, the Regional Neurosciences Unit at the Royal Free Hospital and the Vrije Universiteit, Amsterdam. He was appointed to the consultant staff at Chelsea and Westminster Hospital, the Royal Brompton Hospital and the Hammersmith Hospitals in 2005. His clinical interests include all aspects of neurology, but particularly TIA, stroke, Alzheimer's disease, dementia and headache. His research interests are similar and he has published a number of articles in learned journals.

Other contributions

Clinical Lead for TIA; Deputy Lead for Stroke; Stroke Thrombolysis at Charing Cross Hospital



GMC number



Royal College of Physicians, Association of British Neurologists, British Association of Stroke Physicians, Royal Society of Medicine, Harveian Society, British Medical Association

Spoken languages

English, Dutch