Michael Richard Ehmann, M.D., M.P.H., M.S.

Headshot of Michael Richard Ehmann
  • Program Director, Emergency Medicine Residency
  • Assistant Professor of Emergency Medicine


Emergency Medicine

Research Interests

Emergency Medicine Medical Education; Application of Evidence-based Medicine in Emergency Care Settings; Acute Kidney Injury ...read more


Michael Ehmann, MD MPH MS FACEP is an Assistant Professor in the Departments of Emergency Medicine and Anesthesiology and Critical Care Medicine. He is Program Director of the Emergency Medicine and Combined Emergency Medicine-Anesthesiology residency programs.

Dr. Ehmann graduated from medical and graduate school in New Orleans before completing the Johns Hopkins Emergency Medicine residency where he was Chief Resident. He was a Focused Advanced Specialized Training (FAST) fellow in Disaster Medicine during his final year of residency and joined the Emergency Medicine faculty in 2016. He has been in Emergency Medicine residency leadership since 2017 and assumed the Program Director role in 2023.

Dr. Ehmann's interests include medical student and resident education, acute kidney injury in the Emergency Department, and the clinical practice of emergency medicine. Dr. Ehmann treats patients in the Emergency Departments of Johns Hopkins Bayview Medical Center and the Johns Hopkins Hospital.

...read more


  • Program Director, Emergency Medicine Residency
  • Program Director, Combined Emergency Medicine-Anesthesiology Residency
  • Assistant Professor of Emergency Medicine
  • Assistant Professor of Anesthesiology and Critical Care Medicine

Departments / Divisions



  • MD; Tulane University School of Medicine (2012)


  • Emergency Medicine; Johns Hopkins University School of Medicine (2016)

Board Certifications

  • American Board of Emergency Medicine (Emergency Medicine) (2017)

Research & Publications

Selected Publications

View all on PubMed

Ehmann MR, Zink EK, Levin AB, et al. Operational recommendations for scarce resource allocation in a public health crisis. Chest. 2021;159(3):1076-1083.

Ehmann MR, Klein EY, Kelen GD, Regan L. Emergency medicine career outcomes and scholarly pursuits: The impact of transitioning from a three-year to a four-year niche-based residency curriculum. AEM Educ Train. 2020;5(1):43-51

Hinson JS, Ehmann MR, Klein EY. Evidence and patient safety prevail over myth and dogma: Consensus guidelines on the use of intravenous contrast media. Ann Emerg Med. 2020;76(2):149-52

Hinson JS, Ehmann MR, Al Jalbout N, Ortmann MJ, Zschoche J, Klein EY. Risk of acute kidney injury associated with medication administration in the emergency department. J Emerg Med. 2020;58(3):487-496

Hinson JS, Ehmann MR, Fine DM, Fishman EK, Toerper MF, Rothman RE, Klein EY. Risk of acute kidney injury after intravenous contrast media administration. Ann Emerg Med. 2017;69(5):577-586

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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