Romergryko Guance Geocadin, M.D.

Headshot of Romergryko Guance Geocadin
  • Co-Director, Johns Hopkins Encephalitis Center
  • Professor of Neurology

Languages: English, Cebuano, Filipino


Acute Stroke Care, Carotid Artery Disease, Cerebrovascular Diseases, Critical Care, Intracerebral Hemorrhage, Ischemic Heart Disease, Moyamoya Disease, Stroke, Stroke Imaging, Stroke Prevention, Stroke Recovery, Stroke Rehabilitation, Transient Ischemic Attack more

Research Interests

Neuroprotective strategies for cerebral ischemia; intracranial hemorrhage; other acute brain injury more

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The Johns Hopkins Hospital (Main Entrance)

Appointment Phone: 410-955-7481
1800 Orleans St.
Sheikh Zayed Tower
Baltimore, MD 21287
Fax: 410-614-7903
The Johns Hopkins Hospital (Main Entrance) - Google Maps

Johns Hopkins Bayview Medical Center

Appointment Phone: 410-550-0942
4940 Eastern Avenue
Baltimore, MD 21224
Phone: 410-550-0942 | Fax: 410-550-0443
Johns Hopkins Bayview Medical Center - Google Maps


Dr. Romergryko G. Geocadin is a professor of neurology, of neurosurgery and of anesthesiology and critical care medicine at the Johns Hopkins University School of Medicine. He holds a joint appointment in medicine.

He completed his medical education in the Philippines, residency at NYU and fellowship at Johns Hopkins, and now specializes in neurocritical care medicine at Johns Hopkins. Presently, he is the chairman of the multidisciplinary critical care practice committee at Johns Hopkins Bayview and co-director of the Johns Hopkins Encephalitis Center. Previously, he was director of the Neurosciences Critical Care Unit at Johns Hopkins Bayview and director of the Division of Neurosciences Critical Care at Johns Hopkins.

As a member of the Science Committee of the Emergency Cardiovascular Care Committee of the American Heart Association (AHA) and the Adult Research Task Force of the Get with the Guidelines Resuscitation, he has published several AHA statements, guidelines and high-impact scientific articles related to cardiac arrest resuscitation. 

Dr. Geocadin was a panelist and speaker for the Institute of Medicine (IOM) of the National Academy of Sciences Committee on Treatment of Cardiac Arrest: Current Status and Future Directions. He is chair of the practice guidelines writing group on Brain Injury and Cardiac Arrest for the American Academy of Neurology.

Dr. Geocadin has published extensively in peer-reviewed journals, and he serves on the editorial boards of Resuscitation, Neurocritical Care, Seminars in Neurology, and Critical Care Practice and Research. He was guest editor for Neurology Clinics, Critical Care Clinics, and Emergency Medicine Clinics of North America. 

He has been elected fellow of the American Academy of Neurology, American Neurological Association and the Neurocritical Care Society. He is the president-elect of the Neurocritical Care Society (NCS) and chairman of the 2014 Annual Meeting of the NCS. more


  • Co-Director, Johns Hopkins Encephalitis Center
  • Professor of Neurology
  • Joint Appointment in Medicine
  • Professor of Anesthesiology and Critical Care Medicine
  • Professor of Neurosurgery

Departments / Divisions

Centers & Institutes



  • MD; University of the East (1991)


  • Neurology; New York University Medical Center (1997)


  • Neurological Critical Care; Johns Hopkins University School of Medicine (1999)

Board Certifications

  • American Board of Psychiatry And Neurology (Neurology) (2000)

Research & Publications

Research Summary

Dr. Geocadin’s basic, translational and clinical research focuses on the mechanisms and treatment of acute disorders of consciousness experienced by ICU patients, particularly those who suffer brain injury after cardiac arrest. His translational and clinical studies have yielded key insights about the early neurophysiologic mechanisms of acute coma recovery and the impact of temperature management/therapeutic hypothermia on coma recovery and prognostication.

His additional research interests include acute neurological injuries after global cerebral ischemia (brain injury and cardiac arrest); neurologic injury mechanisms related to coma; quantitative electroencephalogram (qEEG) in determining functional outcome in cardiac survivors; therapeutic hypothermia for acute neurologic injuries; novel uses of neuro-electrophysiology for early detection of acute neurological injuries; diagnosis and treatment of encephalitis; cerebral herniation; seizures; intracranial hemorrhage; status epilepticus; and ischemic and hemorrhagic strokes in the ICU.

Clinical Trials

Ketogenic Diet for Refractory Status Epilepticus

Selected Publications

Manno EM, Freeman WD, Livesay S, Geocadin RG, Torbey M, Nyquist P, Hemphill C; Neurocritical Care Society, Dr Edward Manno, Neurocritical Care Society President. “Expertise matters.” Crit Care Med. 2016 Nov;44(11):e1147-e1148. No abstract available

Eseonu CI, ReFaey K, Geocadin RG, Quinones-Hinojosa A. “Postoperative cerebral vasospasm following transsphenoidal pituitary adenoma surgery.” World Neurosurg. 2016 Aug;92:7-14. doi: 10.1016/j.wneu.2016.04.099. Review

Hannawi Y, Abers MS, Geocadin RG, Mirski MA. “Abnormal movements in critical care patients with brain injury: a diagnostic approach.” Crit Care. 2016 Mar 14;20:60. doi: 10.1186/s13054-016-1236-2. Review

Stupple A, Geocadin RG, Celi LA. “Conversation prior to resuscitation: The new CPR.” Resuscitation. 2016 Feb;99:e3. doi: 10.1016/j.resuscitation.2015.12.006. No abstract available

Callaway CW, Donnino MW, Fink EL, Geocadin RG, Golan E, Kern KB, Leary M, Meurer WJ, Peberdy MA, Thompson TM, Zimmerman JL. “Part 8: Post-cardiac arrest care: 2015 American Heart Association Guidelines Update for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care.” Circulation. 2015 Nov 3;132(18 Suppl 2):S465-82. doi: 10.1161/CIR.0000000000000262. Review. No abstract available

Activities & Honors


  • Selected Delegate, Neurology Leadership Forum of the American Academy of Neurology, 2003
  • Corporate Roundtable Clinical Research Training Fellowship Award, American Academy of Neurology-Education and Research Foundation, 2000 - 2002
  • Postdoctoral Fellowship Award, American Heart Association – Mid-Atlantic Affiliate, 1999
  • David S. Dana Research Award, Johns Hopkins Neurocritical Care Division, 1999 - 2000
  • Eleanor Naylor Dana Neuroscience Critical Care Fellowship Award, Johns Hopkins Neurocritical Care Division, 1997 - 1998
  • Scholarship for Residents at the 48th Annual Meeting of the American Academy of Neurology, San Francisco, CA, 1996


  • Neurocritical Care Society
  • American Heart Association
  • American Academy of Neurology
  • Society of Critical Care Medicine

Professional Activities

  • Chairman, Critical Care Practice Committee
  • Editorial Board, Resuscitation
  • Editorial Board, Neurocritical Care
  • Editorial Board, Seminars in Neurology
  • Editorial Board, Critical Care Practice and Research
  • President, Neurocritical Care Society, 2014 - 2015
  • Chair, 2014 Annual Meeting, Neurocritical Care Society
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