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David Northrop Hager, M.D., Ph.D.

Photo of Dr. David Northrop Hager, M.D., Ph.D.

Associate Director, Medical Intensive Care Unit

Assistant Professor of Medicine


Expertise: Critical Care Medicine, Pulmonary Disease and Critical Care Medicine

Research Interests: Critical care medicine; Ventilator-induced lung injury; Acute lung injury; High Frequency Ventilation; Acute Patient Triage

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The Johns Hopkins Hospital (Main Entrance)


1800 Orleans St. Sheikh Zayed Tower, Suite 9121 Baltimore, MD 21287 map

Fax: 410-955-0036

Johns Hopkins Outpatient Center


601 N. Caroline St. Baltimore, MD 21287 map

Phone: 410-955-6353


Dr. David N. Hager is an Assistant Professor of Medicine at the Johns Hopkins University School of Medicine. His areas of expertise include pulmonary and critical care medicine. Dr. Hager serves as the Associate Director of the Medical Intensive Care Unit and the Director of the Medical Progressive Care Unit (an intermediate care unit) at the Johns Hopkins Hospital.

Dr. Hager earned his M.D. at Cornell University Medical College and his Ph.D. from the Johns Hopkins Bloomberg School of Public Health.  He completed his residency in medicine and fellowship in pulmonary and critical care medicine at Johns Hopkins Hospital.

His research interests include acute lung injury, high frequency ventilation, acute patient triage, intermediate care, and sepsis. more


  • Associate Director, Medical Intensive Care Unit
  • Director, Medical Progressive Care Unit, Johns Hopkins Hospital
  • Assistant Professor of Medicine

Departments / Divisions



  • MD, Cornell University Medical College (1999)


  • Johns Hopkins University School of Medicine / Medicine (2002)


  • Johns Hopkins University School of Medicine / Pulmonary Medicine (2007)

Board Certifications

  • American Board of Internal Medicine / Critical Care Medicine (2008)
  • American Board of Internal Medicine / Internal Medicine (2002)
  • American Board of Internal Medicine / Pulmonary Disease (2007)

Research & Publications

Selected Publications

View all on Pubmed

Hager DN, Chandrashekar P, Bradsher 3rd RW, Abdel-Halim AM, Chatterjee S, Sawyer M, Brower RG, Needham DM. Intermediate Care to Intensive Care Triage: A Quality Improvement Project. J Crit Care 2017;42: 282-288 PMID:28810207

Simpson C, Bradsher RW, Scholten E, Sahetya S, Bain W, Siddique S, *Hager DN. Characteristics and outcomes of medical patients admitted directly to an intermediate care unit from the emergency department. Am J Crit Care 2017;26(1): e1-e10 PMID: 27965236

Hager DN. Recent Advances in the Management of the Acute Respiratory Distress Syndrome. Clin Chest Med. 2015 Sep;36(3):481-96. doi: 10.1016/j.ccm.2015.05.002. Epub 2015 Jul 2. Review. PMID: 26304285

Henry K, Hager DN, Pronovost P, Saria S. A targeted real-time early warning score (TREWScore) for septic shock. Sci Transl Med 2015;299(7) PMID: 26246167

Hager DN. High-frequency oscillatory ventilation in adults with acute respiratory distress syndrome. Curr Opin Anaesthesiol. 2012 Feb;25(1):17-23. doi: 10.1097/ACO.0b013e32834ea57b. Review. PMID: 22157194

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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