- Volunteers of America
- Voyages Behavioral Health
- Wakemed Health and Hospitals
- Washington Health System
- Washington Hospital Healthcare System
- Washington Regional
- Washington State Department of Social and Health Services
- Wellpath
- Wellspan Health
- WellStar Health System
- Westchester Medical Center
- West Tennessee Healthcare
- West Virginia Bureau for Behavioral Health and Health Facilities
- West Virginia University Health System
- White River Health System
- Whittier Health Network
- Williamson Health
- Willis-Knighton Health System
- Winona Health
- Witham Health Services
- Yale New Haven Health System
- York Hospital
- Yuma Regional Medical Center