Dr. Parker is an intensivist, clinical medical ethicist, and health services researcher who runs an NIH-funded data science lab focused on the algorithmic allocation of scarce healthcare resources. He is specifically interested in absolute scarcity problems, where demand greatly exceeds supply, and healthcare systems cannot avoid rationing. He applies advanced empirical methods to evaluate and design allocation systems according to the underlying ethical principles. His current projects focus on deceased donor organ allocation policy, life-support triage under crisis standards of care, and the allocation of novel scarce therapeutics. Dr. Parker is the founding executive director of the Common Longitudinal ICU data Format (CLIF) consortium, a growing network of ICU data science labs that develop and utilize the open-source CLIF data standard to perform privacy-preserving federated ICU data science.
University of Chicago
PhD
2021
University of Chicago
Pulmonary and Critical Care Fellowship
2019
University of Chicago
MS
2018
University of Chicago
Internal Medicine Residency
2015
University of Chicago
Medical Ethics Fellowship
2015
Pritzker School of Medicine, University of Chicago
MD
2012
Williams College
BA
2008
Re: Optimizing the handling of missing data in the UNOS database.
Re: Optimizing the handling of missing data in the UNOS database. J Heart Lung Transplant. 2025 May 26.
PMID: 40436225
Unilateral Do-Not-Resuscitate Orders-Reply.
Unilateral Do-Not-Resuscitate Orders-Reply. JAMA. 2025 May 14.
PMID: 40366682
Age and Saving Lives in Crisis Standards of Care: A Multicenter Cohort Study of Triage Score Prognostic Accuracy.
Age and Saving Lives in Crisis Standards of Care: A Multicenter Cohort Study of Triage Score Prognostic Accuracy. Crit Care Explor. 2025 May 01; 7(5):e1256.
PMID: 40358051
Correction: A common longitudinal intensive care unit data format (CLIF) for critical illness research.
Correction: A common longitudinal intensive care unit data format (CLIF) for critical illness research. Intensive Care Med. 2025 Apr; 51(4):836-839.
PMID: 40163136
A common longitudinal intensive care unit data format (CLIF) for critical illness research.
A common longitudinal intensive care unit data format (CLIF) for critical illness research. Intensive Care Med. 2025 Mar; 51(3):556-569.
PMID: 40080116
The Epidemiology of Intensive Care Unit Readmissions Across Ten Health Systems.
The Epidemiology of Intensive Care Unit Readmissions Across Ten Health Systems. medRxiv. 2025 Mar 13.
PMID: 40162266
Addressing Inadequate Documentation of Unilateral Do-Not-Resuscitate Orders.
Addressing Inadequate Documentation of Unilateral Do-Not-Resuscitate Orders. JAMA. 2025 Mar 04; 333(9):755-756.
PMID: 39804637
Development and validation of a multivariable Prediction Model for Pre-diabetes and Diabetes using Easily Obtainable Clinical Data.
Development and validation of a multivariable Prediction Model for Pre-diabetes and Diabetes using Easily Obtainable Clinical Data. medRxiv. 2025 Feb 12.
PMID: 39990568
A systematic review of reporting and handling of missing data in observational studies using the UNOS database.
A systematic review of reporting and handling of missing data in observational studies using the UNOS database. J Heart Lung Transplant. 2025 Mar; 44(3):462-468.
PMID: 39521197
Development and Validation of a Machine Learning Model for Early Detection of Untreated Infection.
Development and Validation of a Machine Learning Model for Early Detection of Untreated Infection. Crit Care Explor. 2024 Oct 01; 6(10):e1165.
PMID: 39392375