Expanded Emergency Department Doubles Its Capacity
Designed to improve service and decrease wait times, the new ED has separate areas for pediatric and behavioral health patients.
Rated Top Performing in Maternity Care by U.S. News & World Report
We are proud to be the only Long Island South Shore hospital to earn this praise.
South Nassau Receives Magnet Designation for Superior Nursing
The American Nursing Credentialing Center recognizes South Nassau for excellence in nursing.
Learn About Our Visitor Policies
We welcome your visit and strive to keep both visitors and patients safe and healthy.
Mount Sinai South Nassau is an acute-care, not-for-profit teaching hospital. We bring state-of-the-art health care right to your neighborhood. Located in Oceanside, New York, we serve the South Shore of Nassau County. And we are one of the largest hospitals on Long Island, with 455 beds and more than 900 doctors.
Our services include advanced care cardiology, oncology, orthopedics, bariatrics, pain management, and mental health care. We have been recognized for excellence in nursing care. In addition, we operate the only trauma center, freestanding emergency room, and stroke center in the area. Plus, our patients have access to all the resources of the Mount Sinai Health System. We are here for you.
- Behavioral Health
- Cancer Care
- Cardiology and Cardiovascular Surgery
- Diabetes
- Emergency Care
- Ear, Nose, and Throat (Otolaryngology)
- Family Medicine
- Genetics
- Geriatrics and Palliative Medicine
- Infusion Center
- Kidney-Nephrology
- LGBT Health
- Neurology and Neurosurgery
- Obstetrics and Gynecology
- Orthopedics and Sports Medicine
- Ophthalmology
- Pain Management
- Pediatrics
- Primary Care
- Radiology
- Sleep Wellness
- Stroke
- Surgery (Outpatient)
- Vascular Surgery
- Weight Loss
- Women’s Imaging
- Wound Care