Date : 17 March 2026

| U.S. Companies | Headquarters | Emergency Department Services |
| HCA Healthcare | Nashville, Tennessee | Traditional hospitals based on EDs and a large network of freestanding emergency departments (FSEDs) |
| Tenet Healthcare Corporation | Dallas, Texas | Mange massive network of hospital-based and freestanding EDs |
| Universal Health Services (UHS) | King of Prussia, Pennsylvania | Offers comprehensive emergency stabilization and treatment services |
| Envision Healthcare | Nashville, Tennessee | Provides physician-led emergency department services |
| Oracle health | Austin, Texas | Emergency Department Information System (EDIS) |
| Epic Systems | Verona, Wisconsin | ASAP Emergency Department |
| Styker Corporation | Kalamazoo, Michigan | Automated external defibrillators (AEDs), advanced monitoring systems, and power-loaded ambulance cots |
| ZOLL Medical Corporation | Chelmsford, Massachusetts | AutoPulse non-invasive cardiac support pump and integrated EMS billing software |
| Global Medical Response | Greenwood Village, Colorado | Provides emergency medical transportation |
| Vituity | Emeryville, California | Offers emergency department management, teletriage, and integrated acute care delivery models |
The U.S. emergency department market size was estimated at USD 216.17 billion in 2025 and is predicted to increase from USD 229.25 billion in 2026 to approximately USD 388.96 billion by 2035, expanding at a CAGR of 6.05% from 2026 to 2035.

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