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Peer-Reviewed Publication
Ann Emerg Med2026;87(1):50-55.January 1, 2026Journal Article

Emergency Physician Employer Market Share and Concentration by Ownership Type.

Angela G Cai1, Zachary J Jarou2, Alexander T Janke3, Cameron J Gettel4, Craig Rothenberg4, Leon C Adelman5, Matthew Simpson6, Jonathan Fisher7, Arjun K Venkatesh4
1Department of Emergency Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA. Electronic address: angela.cai@pennmedicine.upenn.edu.
2Department of Emergency Medicine, Henry Ford Providence Southfield Hospital/Michigan State University, Southfield, MI.
3Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI.
4Department of Emergency Medicine, Yale School of Medicine, New Haven, CT.
5Department of Emergency Medicine, Novant Health Rowan Medical Center, Salisbury, NC.
6EnsoData, Madison, WI.
7Department of Emergency Medicine, Burnett School of Medicine, Texas Christian University, Fort Worth, TX.

Abstract

STUDY OBJECTIVE: With rapid consolidation and corporatization of the emergency physician workforce over recent years, little is known about the current state of the emergency physician market. We characterized employer group market share by ownership structure and market concentration by ownership across geographies. METHODS: We selected hospitals from the Centers for Medicare and Medicaid Servic…

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