- Willis-Knighton Rehabilitation Institute
- Willis-Knighton South & the Center for Womens Health
- Willow Creek Behavioral Health
- Willow Creek Womens Hospital
- Willow Crest Hospital
- Willow Rock Center
- Willow Springs Center
- Wills Eye Hospital
- Wills Memorial Hospital
- Wilma N Vazquez Medical Center
- Wilmington Hospital
- Wilmington Treatment Center
- Wilson Medical Center
- Wilson Medical Center
- Wilson Memorial Hospital
- Winchester Hospital
- Winchester Medical Center
- Windham Hospital
- Windhaven Psychiatric Hospital
- Windmoor Healthcare of Clearwater
- Windom Area Health
- Windsor Laurelwood Center for Behavioral Medicine
- Winkler County Memorial Hospital
- Winnebago Mental Health Institute
- Winner Regional Hospital
- WinnMed
- Winn Parish Medical Center
- Winona Health
- Winship Cancer Institute at Emory Midtown
- Winston Medical Center