David M. Greer, MD, MA

Professor and Chair of Neurology

  • Title Professor and Chair of Neurology
  • Office 617-638-8456
  • Phone 617-638-5351
  • Education Medical School: University of Florida School of Medicine (1995)
    Internship: Internal Medicine, Massachusetts General Hospital, Boston, MA (1996)
    Residency: Neurology, Massachusetts General Hospital, Boston, MA (1999)
    Fellowship: Vascular Neurology and Neurocritical Care, Massachusetts General Hospital, Boston, MA (2001)

Dr. Greer’s research interests include predicting recovery from coma after cardiac arrest, brain death, and multiple stroke-related topics, including acute stroke treatment and stroke prevention. He is a leader in the Neurocritical Care Society, the Society of Critical Care Medicine, and the American Stroke Association. Additionally, he is a well-regarded and dedicated medical educator and clinician.

Dr. Greer received his BA in English Literature from Williams College, an MA in English Literature and MD from University of Florida, and an MA, privatim, from Yale. He completed an internship in internal medicine and a residency in neurology at Massachusetts General Hospital (MGH), followed by fellowship training in vascular neurology and neurocritical care, also at MGH. Previously, he was as Associate Professor of Neurology at Harvard Medical School and Associate Neuroscientist at MGH before joining the faculty at Yale.

Among his many honors and awards, Dr. Greer has been named one of the Best Doctors in America since 2007; he has received the Yale Neurology Residency Program’s Teacher of the Year Award, two Presidential Citations each from the Society of Critical Care Medicine and the Neurocritical Care Society, the Partners Neurology “Superman” Resident Teaching Award from the MGH Department of Neurology and the Stanley M. Wyman Teaching Award from the MGH Department of Medicine.

Dr. Greer is the editor-in-chief of both Neurocritical Care Live and Seminars in Neurology. He serves as a reviewer for several journals, including the New England Journal of Medicine, Annals of Internal Medicine, Brain, Neurology, and Stroke. He is a fellow of the Society of Critical Care Medicine, American Academy of Neurology, American Heart Association, American Neurological Association and Neurocritical Care Society. He has authored more than 150 peer-reviewed manuscripts, reviews, chapters, guidelines and books.

Selected Publications:

Wartenberg KE, Hwang DY, Haeusler KG, Muehlschlegel S, Sakowitz OW, Madžar D, Hamer HM, Rabinstein AA, Greer DM, Hemphill JC 3rd, Meixensberger J, Varelas PN. Gap Analysis Regarding Prognostication in Neurocritical Care: A Joint Statement from the German Neurocritical Care Society and the Neurocritical Care Society. Neurocrit Care. 2019 Oct;31(2):231-244. doi: 10.1007/s12028-019-00769-6. Erratum in: Neurocrit Care. 2019 Aug 21;:. PubMed PMID: 31368059.

Greer DM. The Case for Broad Subspecialty Training. Crit Care Med. 2019 Aug 8. doi: 10.1097/CCM.0000000000003963. [Epub ahead of print] PubMed PMID: 31397715.

Wartenberg KE, Hwang DY, Haeusler KG, Muehlschlegel S, Sakowitz OW, Madžar D, Hamer HM, Rabinstein AA, Greer DM, Hemphill JC 3rd, Meixensberger J, Varelas PN. Correction to: Gap Analysis Regarding Prognostication in Neurocritical Care: A Joint Statement from the German Neurocritical Care Society and the Neurocritical Care Society. Neurocrit Care. 2019 Aug 21. doi: 10.1007/s12028-019-00824-2. [Epub ahead of print] PubMed PMID: 31435836.

Geocadin RG, Callaway CW, Fink EL, Golan E, Greer DM, Ko NU, Lang E, Licht DJ, Marino BS, McNair ND, Peberdy MA, Perman SM, Sims DB, Soar J, Sandroni C. Standards for Studies of Neurological Prognostication in Comatose Survivors of Cardiac Arrest: A Scientific Statement From the American Heart Association. Circulation. 2019 Jul 11; CIR0000000000000702.

Greer DM, Lewis A. Restoration of cellular activity after decapitation. Nat Rev Neurol. 2019 May 24.

Ormseth CH, Maciel CB, Zhou SE, Barden MM, Miyares LC, Beekman RB, Gilmore EJ, Greer DM. Differential outcomes following successful resuscitation in cardiac arrest due to drug overdose. Resuscitation. 2019 Jun; 139:9-16.

Zhou SE, Maciel CB, Ormseth CH, Beekman R, Gilmore EJ, Greer DM. Distinct predictive values of current neuroprognostic guidelines in post-cardiac arrest patients. Resuscitation. 2019 Jun; 139:343-350.

Russell JA, Epstein LG, Greer DM, Kirschen M, Rubin MA, Lewis A. Brain death, the determination of brain death, and member guidance for brain death accommodation requests: AAN position statement. Neurology. 2019 Jan 02.

Amorim E, Ghassemi MM, Lee JW, Greer DM, Kaplan PW, Cole AJ, Cash SS, Bianchi MT, Westover MB. Estimating the False Positive Rate of Absent Somatosensory Evoked Potentials in Cardiac Arrest Prognostication. Crit Care Med. 2018 Dec; 46(12):e1213-e1221.

Lewis A, Bernat JL, Blosser S, Bonnie RJ, Epstein LG, Hutchins J, Kirschen MP, Rubin M, Russell JA, Sattin JA, Wijdicks EFM, Greer DM. An interdisciplinary response to contemporary concerns about brain death determination. Neurology. 2018 Jan 31. pii: 10.1212/WNL.0000000000005033. doi: 10.1212/WNL.0000000000005033.

Zhang LY, Zhang J, Kim RK, Matthews JL, Rudich DS, Greer DM, Lesser RL, Amin H. Risk of Acute Ischemic Stroke in Patients With Monocular Vision Loss of Vascular Etiology. J Neuroophthalmol. 2018 Jan 22. doi: 10.1097/WNO.0000000000000613.

Weber U, Johnson J, Anderson N, Knies AK, Nhundu B, Bautista C, Huang KB, Hamza M, White J, Coppola A, Akgün KM, Greer DM, Marcolini EG, Gilmore EJ, Petersen NH, Timario N, Poskus K, Sheth KN, Hwang DY. Dedicated Afternoon Rounds for ICU Patients’ Families and Family Satisfaction With Care. Crit Care Med. 2018 Jan 3. doi: 10.1097/CCM.0000000000002963.

Hwang DY, Greer DM. Neurocritical Care and Emergency Neurology: Current Evidence and Consensus Practice. Semin Respir Crit Care Med. 2017 Dec;38(6):711-712. doi: 10.1055/s-0037-1608797. Epub 2017 Dec 20.

Chang CF, Goods BA, Askenase MH, Hammond MD, Renfroe SC, Steinschneider AF, Landreneau MJ, Ai Y, Beatty HE, da Costa LHA, Mack M, Sheth KN, Greer DM, Huttner A, Coman D, Hyder F, Ghosh S, Rothlin CV, Love JC, Sansing LH. Erythrocyte efferocytosis modulates macrophages towards recovery after intracerebral hemorrhage. J Clin Invest. 2018 Feb 1;128(2):607-624. doi: 10.1172/JCI95612. Epub 2017 Dec 18.

Youn TS, Lavin P, Patrylo M, Schindler J, Kirshner H, Greer DM, Schrag M. Current treatment of central retinal artery occlusion: a national survey. J Neurol. 2017 Dec 13. doi: 10.1007/s00415-017-8702-x.

Greer DM, Wijdicks EFM, Kaufmann TJ. Letter to the Editor. Computed tomography angiography in brain death determination: is there justification for its use? J Neurosurg. 2018 Feb;128(2):650-653. doi: 10.3171/2017.4.JNS17824. Epub 2017 Nov 24.

Beekman R, Greer DM, Maciel CB. Poor neurologic outcomes after cardiac arrest; a spectrum with individual implications. Epilepsy Behav Case Rep. 2017 Sep 7;8:85-86. doi: 10.1016/j.ebcr.2017.08.002. eCollection 2017. PubMed PMID: 29159067.

Beekman RB, Greer DM, Brooks DC, Maciel CB. Clinical Reasoning: Prognostication after cardiac arrest: What do we really know? Neurology. 2017 Nov 14;89(20):e239-e244. doi: 10.1212/WNL.0000000000004649.

Stretz C, Gao C, Greer DM, Loomis C, Gilmore EJ, Kundishora AJ, Matouk CC, Hwang DY. Intracerebral Hemorrhage with Intraventricular Extension-Getting the Prognosis Right Early. Front Neurol. 2017 Aug 17;8:418. doi: 10.3389/fneur.2017.00418. eCollection 2017.

Sreekrishnan A, Leasure AC, Shi FD, Hwang DY, Schindler JL, Petersen NH, Gilmore EJ, Kamel H, Sansing LH, Greer DM, Sheth KN. Functional Improvement Among Intracerebral Hemorrhage (ICH) Survivors up to 12 Months Post-injury. Neurocrit Care. 2017 Dec;27(3):326-333. doi: 10.1007/s12028-017-0425-4.

George IC, Youn TS, Marcolini EG, Greer DM. Clinical Reasoning: Acute onset facial droop in a 36-year-old pregnant woman. Neurology. 2017 Jun 13;88(24):e240-e244. doi: 10.1212/WNL.0000000000004030.

Maciel CB, Morawo AO, Tsao CY, Youn TS, Labar DR, Rubens EO, Greer DM. SSEP in Therapeutic Hypothermia Era. J Clin Neurophysiol. 2017 May 25. doi: 10.1097/WNP.0000000000000392.

Maciel CB, Barden MM, Greer DM. Neurologic Recovery After Cardiac Arrest: a Multifaceted Puzzle Requiring Comprehensive Coordinated Care. Curr Treat Options Cardiovasc Med. 2017 Jul;19(7):52. doi: 10.1007/s11936-017-0548-0. Review.

Izzy S, Mazwi NL, Martinez S, Spencer CA, Klein JP, Parikh G, Glenn MB, Greenberg SM, Greer DM, Wu O, Edlow BL. Revisiting Grade 3 Diffuse Axonal Injury: Not All Brainstem Microbleeds are Prognostically Equal. Neurocrit Care. 2017 May 5. doi: 10.1007/s12028-017-0399-2.

Maciel CB, Hirsch LJ, Greer DM, Alkawadri R. Accurate Neuroprognostication in Cardiac Arrest Survivors: Details Matter! Resuscitation. 2017 Jun;115:e3-e4. doi: 10.1016/j.resuscitation.2017.03.030. Epub 2017 Mar 28.

Neavyn MJ, Stolbach A, Greer DM, Nelson LS, Smith SW, Brent J, Tormoehlen LM; American College of Medical Toxicology. ACMT Position Statement: Determining Brain Death in Adults After Drug Overdose. J Med Toxicol. 2017 Mar 2. doi: 10.1007/s13181-017-0606-8.

Marehbian J, Greer DM. Normothermia and Stroke. Curr Treat Options Neurol. 2017 Jan;19(1):4. doi: 10.1007/s11940-017-0437-6. Review.

Maciel CB, Hwang DY, Greer DM. Organ donation protocols. Handb Clin Neurol. 2017;140:409-439. doi: 10.1016/B978-0-444-63600-3.00023-4. Review.

Cox Bauer CM, Greer DM, Kram JJ, Kamelle SA. Corrigendum to ‘Tumor diameter as a predictor of lymphatic dissemination in endometrioid endometrial cancer’ [Gynecol. Oncol. 141 (2016) 199-205]. Gynecol Oncol. 2017 Mar;144(3):649. doi: 10.1016/j.ygyno.2016.11.049. Epub 2017 Jan 26.

Kram JJF, Greer DM, Cabrera O, Burlage R, Forgie MM, Siddiqui DS. Does current cefazolin dosing achieve adequate tissue and blood concentrations in obese women undergoing cesarean section? Eur J Obstet Gynecol Reprod Biol. 2017 Mar;210:334-341. doi: 10.1016/j.ejogrb.2017.01.022. Epub 2017 Jan 19.

Wang HH, Varelas PN, Henderson GV, Wijdicks EF, Greer DM. Improving uniformity in brain death determination policies over time. Neurology. 2017 Feb 7;88(6):562-568. doi: 10.1212/WNL.0000000000003597. Epub 2017 Jan 11.

Schaefer SM, Rostami R, Greer DM. Movement Disorders in the Intensive Care Unit. Semin Neurol. 2016 Dec;36(6):607-614. Epub 2016 Dec 1.

Malhotra A, Schindler J, Mac Grory B, Chu SY, Youn TS, Matouk C, Greer DM, Schrag M. Cerebral Microhemorrhages and Meningeal Siderosis in Infective Endocarditis. Cerebrovasc Dis. 2017;43(1-2):59-67. doi: 10.1159/000452718. Epub 2016 Nov 22.

Maciel CB, Greer DM. ICU Management of the Potential Organ Donor: State of the Art. Curr Neurol Neurosci Rep. 2016 Sep;16(9):86. doi: 10.1007/s11910-016-0682-1. Review.

Ngui EM, Greer DM, Bridgewater FD, Salm Ward TC, Cisler RA. Trends and Progress in Reducing Teen Birth Rates and the Persisting Challenge of Eliminating Racial/Ethnic Disparities. J Racial Ethn Health Disparities. 2016 Jul 20.

Sreekrishnan A, Dearborn JL, Greer DM, Shi FD, Hwang DY, Leasure AC, Zhou SE, Gilmore EJ, Matouk CC, Petersen NH, Sansing LH, Sheth KN. Intracerebral Hemorrhage Location and Functional Outcomes of Patients: A Systematic Literature Review and Meta-Analysis. Neurocrit Care. 2016 Dec;25(3):384-391.

Greer DM, Varelas PN, Wijdicks EF. American Academy of Neurology Guidelines and the Neurologic Determination of Death-Reply. JAMA Neurol. 2016 Jun 1;73(6):761. doi: 10.1001/jamaneurol.2016.0431.

Youn TS, Maciel CB, Greer DM. Cerebral Edema After Cardiac Arrest: Tell Tale Sign of Catastrophic Injury or a Treatable Complication? Neurocrit Care. 2016 Apr;24(2):151-2. doi: 10.1007/s12028-016-0267-5.

Cox Bauer CM, Greer DM, Kram JJ, Kamelle SA. Tumor diameter as a predictor of lymphatic dissemination in endometrioid endometrial cancer. Gynecol Oncol. 2016 May;141(2):199-205. doi: 10.1016/j.ygyno.2016.02.017. Epub 2016 Feb 26.

Edlow BL, Copen WA, Izzy S, Bakhadirov K, van der Kouwe A, Glenn MB, Greenberg SM, Greer DM, Wu O. Diffusion tensor imaging in acute-to-subacute traumatic brain injury: a longitudinal analysis. BMC Neurol. 2016 Jan 11;16:2. doi: 10.1186/s12883-015-0525-8.

Citerio G, Cypel M, Dobb GJ, Dominguez-Gil B, Frontera JA, Greer DM, Manara AR, Shemie SD, Smith M, Valenza F, Wijdicks EF. Organ donation in adults: a critical care perspective. Intensive Care Med. 2016 Mar;42(3):305-15. doi: 10.1007/s00134-015-4191-5. Epub 2016 Jan 11. Review.

Cox Bauer CM, Bernhard KA, Greer DM, Merrill DC. Maternal and neonatal outcomes in obese women who lose weight during pregnancy. J Perinatol. 2016 Apr;36(4):278-83. doi: 10.1038/jp.2015.202. Epub 2016 Jan 7.

Forgie MM, Greer DM, Kram JJ, Vander Wyst KB, Salvo NP, Siddiqui DS. Foley catheter placement for induction of labor with or without stylette: a randomized clinical trial. Am J Obstet Gynecol. 2016 Mar;214(3):397.e1-397.e10. doi: 10.1016/j.ajog.2015.12.043. Epub 2015 Dec 24.

Greer DM, Wang HH, Robinson JD, Varelas PN, Henderson GV, Wijdicks EF. Variability of Brain Death Policies in the United States. JAMA Neurol. 2016 Feb;73(2):213-8. doi: 10.1001/jamaneurol.2015.3943.

Edlow BL, Copen WA, Izzy S, van der Kouwe A, Glenn MB, Greenberg SM, Greer DM, Wu O. Longitudinal Diffusion Tensor Imaging Detects Recovery of Fractional Anisotropy Within Traumatic Axonal Injury Lesions. Neurocrit Care. 2016 Jun;24(3):342-52. doi: 10.1007/s12028-015-0216-8.

Greer DM. Cardiac Arrest and Postanoxic Encephalopathy. Continuum (Minneap Minn). 2015 Oct;21(5 Neurocritical Care):1384-96. doi: 10.1212/CON.0000000000000223. Review.

Tjoe JA, Greer DM, Ihde SE, Bares DA, Mikkelson WM, Weese JL. Improving Quality Metric Adherence to Minimally Invasive Breast Biopsy among Surgeons Within a Multihospital Health Care System. J Am Coll Surg. 2015 Sep;221(3):758-66. doi: 10.1016/j.jamcollsurg.2015.06.003. Epub 2015 Jun 14.

Hirsch KG, Mlynash M, Eyngorn I, Pirsaheli R, Okada A, Komshian S, Chen C, Mayer SA, Meschia JF, Bernstein RA, Wu O, Greer DM, Wijman CA, Albers GW. Multi-Center Study of Diffusion-Weighted Imaging in Coma After Cardiac Arrest. Neurocrit Care. 2016 Feb;24(1):82-9. doi: 10.1007/s12028-015-0179-9.

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