Assistant Professor of Neurology Co-Chair of Resuscitation Committee Associate Director of Shock Trauma Simulation Center
Neurocritical Care Unit University of Maryland Medical Center
Education and Training
2003: B.A., Psychology, Yale College (Magna Cum Laude), New Haven, CT
2005: Post-Baccalaureate Premedical Program, Johns Hopkins University, Baltimore, MD
2010: M.D., Harvard Medical School, Boston, MA
Post Graduate Training
2010–2011: Internship, Medicine, Beth Israel Deaconess Medical Center, Boston, MA
2011–2014: Residency, Neurology, Partners Neurology, Brigham and Women’s Hospital / Massachusetts General Hospital, Boston, MA
2014–2016: Fellowship, Neurocritical Care, Columbia University Medical Center / Weill Cornell Medical Center, New York, NY
Dr. Morris was born and raised in Baltimore where he attended Loyola High School. He received his undergraduate degree from Yale University, graduating magna cum laude with distinction in the major of psychology. After working in neuropsychiatry research at the Olin Neuropsychiatric Research Center (Hartford, CT) under the direction of Dr. Godfrey Pearlson, Dr. Morris returned to Baltimore to complete the post-baccalaureate premedical program at Johns Hopkins University. He received his medical degree from Harvard Medical School. He completed his internal medicine internship at Beth Israel Deaconess Medical Center in Boston, MA followed by neurology residency in the Partners Neurology program. Dr. Morris completed his training with a two year fellowship in neurocritical care at Columbia University / Weill Cornell Medical College.
Dr. Morris is interested in exploring brain physiology in disease states through multimodality monitoring. He utilizes large administrative datasets to answer relevant clinical questions. He also holds a strong interest in using simulation to help teach emergency neurology and has been a site investigator in several multi-center clinical trials.
Multimodality Monitoring, Large/Administrative Data, Simulation, Pain and Patient-Centered Outcomes after Subarachnoid Hemorrhage, Brain-Heart Connection
Morris NA, Czeisler BM, Sarwal A. Simulation in neurocritical care: past, present, and future. Neurocritical Care. 2019 June;30(3):522-533.
Morris NA, Chatterjee A, Adejumo OL, Chen M, Merkler AE, Murthy SB, Kamel H. The risk of Takotsubo cardiomyopathy in acute neurological disease. Neurocritical Care. 2019 February; 30(1):171-176.
Morris NA, May TL, Motta M, Agarwal S, Kamel H. Long-term risk of seizures among cardiac arrest survivors. Resuscitation. 2018 August;129:94-96.
Morris NA, Robinson D, Schmidt JM, Frey HP, Park S, Agarwal S, Connolly ES, Claassen J. Hunt Hess 5 subarachnoid hemorrhages presenting with cardiac arrest is associated with larger volume bleeds. Resuscitation. 2018 February;123:71-76.
Morris NA, Merkler AE, Gialdini G, Kamel H. Timing of incident stroke risk following cervical artery dissection presenting without ischemia. Stroke. 2017 March;48(3):551-555.
Johnson MR, Morris NA, Astur RS, Calhoun VD, Mathalon DH, Kiehl KA, Pearlson GD. A functional magnetic resonance study of working memory abnormalities in schizophrenia. Biological Psychiatry. 2006 Jul; 60(1): 11-21. PMID: 16503328
Meda SA, Bhattarai M, Morris NA, Astur RS, Calhoun VD, Mathalon DH, Kiehl KA, Pearlson GD. An fMRI study of working memory in first-degree unaffected relatives of schizophrenia patients. Schizophrenia Research. 2008 Sep; 104(1-3): 85-95. PMID: 18678469.
Morris NA, Matiello M, Lyons JL, Samuels MA. Neurologic complications in infective endocarditis: identification, management, and impact on cardiac surgery. Neurohospitalist. 2014 Oct; 4(4):213-222. PMID: 25360207.
Morris N, Lynch K, Greenberg SA. Severe motor neuropathy or neuronopathy due to nitrous oxide toxicity after correction of vitamin B12 deficiency. Muscle & Nerve. 2015 April;51(4):614-616. PMID: 25297001.
King F, Morris NA, Schmahmann JD. Delayed post-hypoxic leukoencephalopathy: improvement with antioxidant therapy. Case Reports in Neurology. 2015 Dec 24;7(3):242-6. PMID: 26955335.
Morris NA, Kaplan TB, Linnoila J, Cho T. HSV encephalitis-induced anti-NMDAR encephalitis in a 67 year-old woman: report of a case and review of the literature. Journal of Neurovirology. 2016 Feb;22(1):33-7. PMID: 26139017.
Morris NA, Merkler AE, Parker WE, Claassen J, Connolly ES, Sheth KN, Kamel H. Adverse outcomes after initial non-surgical management of subdural hematoma: a population-based study. Neurocritical Care. 2016 April;24(2):226-32. PMID: 26160466.
Morris NA, Batra A, Biffi A, Cohen AB. Transfer delays from the neurologic intensive care unit: a prospective cohort study. Neurohospitalist. 2016 April;6(2):59-63. PMID 27053982.
Roh D, Merkler AE, Al-Mufti F, Morris N, Agarwal S, Claassen J, Park S. Global cerebral edema from hypercapnic respiratory acidosis and response to hyperosmolar therapy. Neurology. 2016 April 19:86:1556-8. PMID 27053982.
Roh D*, Morris NA*, Claassen J. Intracranial multimodality monitoring for delayed cerebral ischemia. Journal of Clinical Neurophysiology. 2016 June;33(3):241-9. PMID 27258448. [*Co-First Authorship]
Al-Mufti F, Morris NA, Lahiri S, Roth W, Machado I, Meyers PM, Witsch J, Connolly ES, Agarwal S, Park S, Claassen J. Use of intra-aortic balloon pump counterpulsation for patients with symptomatic vasospasm following subarachnoid hemorrhage and neurogenic stress cardiomyopathy. Journal of Vascular & Interventional Neurology. 2016 June;9(1):28-34. PMID: 27403221.
Morris NA, Cool J, Merkler AE, Kamel H. Subarachnoid hemorrhage and long-term stroke risk after traumatic brain injury. Neurohospitalist. 2017 July;7(3):122-126. PMID: 28634501.
Morris NA, Merkler AE, Gialdini G, Kamel H. Timing of incident stroke risk following cervical artery dissection presenting without ischemia. 2017 March;48(3):551-555. PMID: 28232592.
Merkler AE, Reynolds AS, Gialdini G, Morris NA, Murthy SB, Thakur K, Kamel H. Neurological complications after tuberculous meningitis in a multi-state cohort in the United States. Journal of the Neurological Sciences. 2017 April;375:460-463. PMID:
Morris NA, Manning N, Marshall RS, Connolly ES, Claassen J, Agarwal S, Roh DJ, Schmidt JM, Park S. Transcranial Doppler waveforms during intraaortic balloon pump counterpulsation for vasospasm detection after subarachnoid hemorrhage. 2018 September;83(3):416-421. PMID: 28973669.
Kharaibeh K, Scott J, Morris NA. Neurogenic stress cardiomyopathy precipitated by acute hydrocephalus in the context of subacute subarachnoid hemorrhage. Neurocritical Care. 2018 April;28:239-242. PMID: 28799114.
Morris NA, Robinson D, Schmidt JM, Frey HP, Park S, Agarwal S, Connolly ES, Claassen J. Hunt Hess 5 subarachnoid hemorrhages presenting with cardiac arrest is associated with larger volume bleeds. 2018 February;123:71-76. PMID: 29253648.
Kamel H, Chung CD, Kone GJ, Gupta J, Morris NA, Fink ME, Navi BB. Medical specialty of providers of mechanical thrombectomy for acute ischemic stroke in the United States. JAMA Neurology. 2018 April;65:515-517. PMID: 29372240.
Merkler AE, Gialdini G, Lerario M, Parikh NS, Morris NA, Kummer B, Dunn L, Reznik M, Murthy SB, Navi B, Grinspan Z, Iadecola C, Kamel H. A population-based assessment of long-term risk of seizures in survivors of stroke. Stroke. 2018 June;49:1319-1324. PMID: 29695463.
Al-Mufti F, Amuluru K, Damodara N, El-Ghanem M, Nuoman R, Kamal N, Al-Marsoummi S, Morris NA, Dangayach NS, Mayer SA. Novel management strategies for medically-refractory vasospasm following aneurysmal subarachnoid hemorrhage. Journal of the Neurological Sciences. July 2018;390:44-51. PMID: 29801906.
Desai M, Morris NA. Prolonged post-traumatic vasospasm resulting in delayed cerebral ischemia after mild traumatic brain injury. Neurocritical Care. 2018 December;29(3):512-513. PMID: 29700693.
Johnston KC, Bruno A, Pauls Q, Hall CE, Barrett KM, Barsan W, Fansler A, Van de Bruinhorst K, Janis S, Durkalski-Mauldin VL. Intensive vs standard treatment of hyperglycemia and functional outcome in patients with acute ischemic stroke: the SHINE randomized clinical trial for the Neurological Emergencies Treatment Trials Network and the SHINE Trial Investigators. JAMA. 2019 Jul 23;322(4):326-35.
Johnston SC, Easton JD, Farrant M, Barsan W, Conwit RA, Elm JJ, Kim AS, Lindblad AS, Palesch YY; Clinical Research Collaboration, Neurological Emergencies Treatment Trials Network, and the POINT Investigators. Clopidogrel and Aspirin in Acute Ischemic Stroke and High-Risk TIA. N Engl J Med. 2018 Jul 19;379(3):215-225.
Agarwal S, Sobczak E, Presciutti A, Brodie D, Morris N, Roh DJ, Park S, Claassen J, Kamel H. Tracheostomy use, long-term survival, and neurological outcomes among cardiac arrest survivors. 2018 August;129:e19-e20. PMID: 29928960.
Morris NA, May TL, Motta M, Agarwal S, Kamel H. Long-term risk of seizures among cardiac arrest survivors. 2018 August;129:94-96. PMID: 29932947.
Morris NA, Chatterjee A, Adejumo OL, Chen M, Merkler AE, Murthy SB, Kamel H. The risk of Takotsubo cardiomyopathy in acute neurological disease. Neurocritical Care. 2019 February; 30(1):171-176. PMID: 30094686.
Martin A, Chen ML, Chaterjee A, Merkler AE, Chung CD, Wu X, Morris NA, Kamel H. Specialty classification of physicians who provide neurocritical care in the United States. Neurocritical Care. 2019 February;30(1):177-184. PMID: 30155587.
Al-Mufti F, Lander M, Smith B, Morris NA, Nuoman R, Gupta R, Lissauer ME, Gupta G, Lee K. Multimodality monitoring in neurocritical care: decision making utilizing direct and indirect surrogate markers. Intensive Care Medicine. 2018 June;34(6):449-463. PMID: 30205730.
Jenkins R*, Morris NA*, Haac B, van Besien R, Stein DM, Chang WT, Schwartzbauer G, Parikh G, Badjatia N. Inpatient complications predict tracheostomy better than admission variables after traumatic brain injury. Neurocritical Care. 2019 April;30(2):387-393. PMID: 30334232. [*Co-First Authorship]
Morris NA, Czeisler BM, Sarwal A. Simulation in neurocritical care: past, present, and future. Neurocritical Care. 2019 June;30(3):522-533. PMID:
Patel N, Bronder J, Motta M, Morris N. Mystery Case: A 23-year old man with headaches, confusion, and lower extremity weakness. 2019 April;92(18):863-867. PMID: 31036572.
Reddi A, Patel N, Morris NA. Diffuse large B-cell lymphoma secondary to JC virus in progressive multifocal leukoencephalopathy. Journal of Neurovirology. 2019 December;25(6):883-886. PMID: 31140130
Agarwal S, Morris NA, Der-Nihohossian CD, May T, Brodie D. The influence of therapeutics on prognostication after cardiac arrest. Current Treatment Options in Neurology. 2019 Nov;21(12):60. PMID: 31768661.
Jenkins R, Morris NA, Haac B, van Besien R, Stein DM, Badjatia N, Medic A, Mester G, Tran QK. Outcome predictors for severely brain-injured patients directly admitted or transferred from emergency departments to a trauma center. World Journal of Emergency Medicine. 2020;11(2):120.
Morris NA, Zimmerman E. Pozner CN, Henderson GV, Milligan TA. Brain death determination: an interprofessional simulation to determine brain death and communicate with families focused on neurology residents. Accepted for by publication by MedEdPortal.
Morris NA, Chen ML, Adejumo OL, Murthy SB, Kamel H, Merkler AE. Stroke risk following Takotsubo cardiomyopathy. Accepted for publication by Neurohospitalist.
Jenkins R, Badjatia N, Haac B, Van Besien R, Biedlingmaier JF, Stein DM, Chang WT, Schwartzbauer G, Parikh G, Morris NA. Factors Associated with Tracheostomy Decannulation in Patients with Severe Traumatic Brain Injury. Accepted for publication by Brain Injury.
American Board of Psychiatry and Neurology Faculty Innovation in Education Award (2017-2019)
University of Maryland, Baltimore (UMB) Institute for Clinical and Translational Research (ICTR) Accelerated Translational Incubator Pilot (ATIP) grant (2020)