Jan Claassen, MD, FNCS

Critical Care Neurology
Neurology, Critical Care Neurology, more

Locations and Appointments

CUIMC/Milstein Hospital Building

177 Ft. Washington Avenue
New York, NY 10032
Existing Patients
Login or sign-upto Connect Patient Portal

CUIMC/Neurological Institute of New York

710 West 168th Street
New York, NY 10032
Existing Patients
Login or sign-upto Connect Patient Portal
Existing Patients
Login to Connect Patient Portal make an appointment, view documentation or contact your doctor’s office.
Columbia Connect App
The Columbia Connect app allows you to access convenient services to help manage your health. Access the patient portal, communicate with your doctor, manage appointments, view test results, request prescription refills, pay a bill, and find a doctor.

About Jan Claassen, MD, FNCS

Dr. Claassen is a Professor of Neurology and the Director of Critical Care Neurology at Columbia University. He is an Associate Attending Physician at NewYork-Presbyterian/Columbia University Irving Medical Center and the Medical Director of the Neurocritical Care Unit. Dr. Claassen received his medical degree from the University of Hamburg, Germany, and completed residency training in Neurology, and Fellowship training in Neurocritical Care and Epilepsy at Columbia University. He is board certified in Neurology and Neurocritical Care.

Dr Claassen is a nationally and internationally recognized expert in the treatment of neurological intensive care. He is an expert in coma, status epilepticus and brain hemorrhages. He served on the board of directors and as the co-chair for guidelines development for the Neurocritical Care Society. He has championed the use of innovative brain monitoring techniques including continuous EEG monitoring. His sits on the editorial board of Annals of Neurology and Neurocritical Care.

Dr Claassen's research characterizes physiologic changes following acute brain injury, focusing on novel treatment approaches to potentially improve patient outcomes. He is a widely recognized expert on disorders of consciousness. He has published more than 300 journal articles, book chapters, and reviews. He is the co-editor of the seminal monograph Plum and Posner's: Diagnosis and Treatment of Stupor and Coma. His research is supported by federal R01 and foundation grants

Board Certifications

  • Neurology

Languages Spoken

  • German

Specialties & Expertise

  • Encephalitis
  • Epileptic Seizures
  • Intracerebral Hemorrhage
  • Meningitis
  • Spinal Cord Injury
  • Subarachnoid Hemorrhage
  • Transient Ischemic Attacks/ TIA
  • Traumatic Brain Injury


  • Residency: NewYork-Presbyterian Hospital/Columbia University Medical Center
  • Residency: Harlem Hospital Center
  • Medical School: University of Hamburg, Germany
  • Fellowship: NewYork-Presbyterian Hospital/Columbia University Medical Center

Leadership, Titles & Positions

  • Chief, Critical Care and Hospitalist Neurology
  • Head of Neurocritical Care and Medical Director of the Neurological Intensive Care Unit
  • Professor of Neurology

Hospital Affiliations

  • NewYork-Presbyterian / Columbia University Irving Medical Center

Need Help Finding a Doctor?