Theodore Iwashyna

Theodore Iwashyna Headshot
Co-Investigator, Health and Retirement Study

Contact Information

The Johns Hopkins University
1830 E Monument St, Room 519
Baltimore, MD 21205

Phone: 734-709-1865


M.D., University of Chicago, Chicago, IL, 2002
Ph.D., University of Chicago, Chicago, IL, 2001
A.B., Molecular Biology, Princeton University, Princeton, NJ, 1994

Research and Projects

Theodore Iwashyna is a Bloomberg Distinguished Professor at Johns Hopkins, appointed in the Schools of Medicine and Public Health. Major foci of his research include defining the causal effects of acute illnesses (particularly infections like pneumonia and COVID, as well as respiratory failure) on patients and families; understanding the way social context shapes physiological recovery; and the ways in which racism and bias are embedded in medical systems. He is also a practicing medical intensive care physician.

Selected Recent Publications

Matta S, Hsu JW, Iwashyna TJ, Baum MY, Langa KM, Nicholas LHersch. Identifying cohabiting couples in administrative data: evidence from Medicare address data. Health Services and Outcomes Research Methodology. 2021;21(2):238-247. doi:10.1007/s10742-020-00229-1.
Bell SAnne, Choi H, Langa KM, Iwashyna TJ. Health Risk Behaviors after Disaster Exposure Among Older Adults. Prehospital and Disaster Medicine. 2019;34(1):95-97. doi:10.1017/S1049023X18001231.
Prescott HC, Carmichael AG, Langa KM, Gonzalez R, Iwashyna TJ. Paths into sepsis: Trajectories of presepsis healthcare use. Annals of the American Thoracic Society. 2019;16(1):116-123. doi:10.1513/AnnalsATS.201806-391OC.
Prescott HC, Iwashyna TJ. Reply: End-of-Life Treatment Preferences in the Health and Retirement Study. Annals of the American Thoracic Society. 2019;16(4):523. doi:10.1513/AnnalsATS.201810-739LE.