24-Hour Emergency Care for Our Community

Mercy Hospital's Emergency Department in Rockville Centre, NY, is open 24-hours a day, seven days a week to help Long Islanders with emergent medical issues.

Emergency staff members are trained to treat all medical conditions, illnesses and injuries. They use advanced diagnostic imaging and consult with Mercy Hospital's specialists in multiple disciplines. Our goal is to provide rapid diagnosis and immediate care.

Call 9-1-1 immediately if you are experiencing a medical emergency.

Emergency Services

Our highly experienced and compassionate team of board-certified emergency medicine physicians, registered nurses, radiologists and additional support staff treat a range of injuries and conditions, including:

  • Heart attack
  • Head injuries
  • Orthopedic injuries
  • Pediatric injuries
  • Respiratory distress
  • Stroke

Primary Stroke Center

Mercy Hospital is a New York State Department of Health-designated Primary Stroke Center and certified by the New York State Joint Commission. The hospital has received the 2022 American Heart Association/American Stroke Association’s Get With The Guidelines®-Gold Plus Quality Achievement Award as well as the Target: Stroke Honor Roll Elite Award.

View stroke care services


Heart & Vascular Care

Our St. Francis Heart Center offers the most advanced cardiac catheterization services.

View interventional cardiology services