About Keith Marill, MD

Dr. Keith A. Marill, attending physician in the Department of Emergency Medicine at Massachusetts General Hospital, received his M.D. from the University of Rochester School of Medicine and Dentistry. He completed residencies in internal medicine at the University of New Mexico Hospitals, and in emergency medicine at Texas Tech University Health Sciences Center. He received his Masters degree in Clinical Research Design from the University of Pittsburgh.

Dr. Marill is an associate professor at Harvard Medical School. He provides direct supervision and training of residents and HMS students and is a core faculty educator in the Harvard Affiliated Emergency Medicine residency program (HAEMR). Dr. Marill has concentrated on teaching principles of the diagnosis and treatment of acute heart disease in emergency medicine to fellow emergency physicians, researchers, residents, and medical students at local and national conferences and lectures. His translational and clinical research focuses primarily on the prediction, diagnosis, and treatment of sudden cardiac death. Dr. Marill is a leader of the MGH emergency medicine residency journal club.  He also teaches clinical research principles to residents and medical students.  He serves as a decision editor for the journal Annals of Emergency Medicine

Clinical Interests:



Mass General Emergency Medicine: Center for Vascular Emergencies
Zero Emerson Place
Suite 3B
Boston, MA 02114
Phone: 617-726-5824

Medical Education

  • MD, University of Rochester School of Medicine and Dentistry
  • Residency, R.E. Thomason Hospital
  • Residency, University of New Mexico Hospital
  • Fellowship, UPMC Institute for Clinical Research Education

American Board Certifications

  • Emergency Medicine, American Board of Emergency Medicine

Accepted Insurance Plans

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Dr. Marill's research is focused on the diagnosis and treatment of dysrhythmic conditions and sudden cardiovascular death in the emergency setting. He has led groups that investigated the utility of medications such as lidocaine, amiodarone, procainamide, adenosine, and sotalol for the diagnosis and treatment of wide QRS complex and particularly ventricular tachycardia. This research has directly contributed to the ongoing evolution of the American Heart Association Advanced Cardiac Life Support (ACLS) algorithms.  It also has implications for the broader spectrum of ventricular dysrhythmias that are responsible for the majority of sudden cardiac death in the U.S.   Current research focuses on QT disease and its association with Torsades de Pointes and sudden death.   Dr. Marill has also investigated the utility of the serum d-dimer test for the diagnosis of acute aortic dissection.

Clinical research design and the advancement of the understanding and analysis of multivariate data and the evaluation of diagnostic tests is another area of interest.  Dr. Marill has lectured nationally and published both conceptual reviews and original research on these subjects.


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