Get to Know Us

Welcome to Mount Sinai South Nassau

Welcome to Mount Sinai South Nassau

We are an award-winning, 455-bed, acute care, not-for-profit teaching hospital located in Oceanside. Our dedicated staff serves the entire South Shore, from the Rockaways in Queens to the Massapequas and beyond. And we offer quality, compassionate care on our main campus in Oceanside, plus nine other satellite facilities in the region.

Some people call us the best-kept secret on Long Island, though we rank among the best for the health care we provide. And our commitment to quality is the reason Mount Sinai South Nassau hospital on Long Island has received the following honors for quality and service excellence:

  • Recognized by US News & World Report’s 2019-2020 “Best Hospitals” issue as a Best Regional Hospital, ranking #20 in both New York State and the New York Metro area.
  • Recognized by US News & World Report’s 2019-2020 “Best Hospitals” issue as having one of the nation’s top 50 urology programs. We are ranked #35 in the nation for Urology. 
  • The Joint Commission Perinatal Care Certification (First Long Island Hospital to Earn Joint Commission Certification)
  • HomeCare Elite™ listing of the top 25% of home health care providers in the US
  • Top Nursing Care, according to the American Nurses Credentialing Center’s (ANCC) Magnet® recognition
  • Becker’s Hospital Review “100 Hospitals with Great Women’s Health Programs”
  • Infectious Diseases Society of America Antimicrobial Stewardship Centers of Excellence designation
  • Full list of Mount Sinai South Nassau's Awards & Accreditations

We invite you to explore this website to see how we can serve you, your family and neighbors.

Learn More

President’s message
“Get to Know Mount Sinai South Nassau” booklet
Community service plan
Mission, vision and values

President’s Message

President’s Message

At Mount Sinai South Nassau, we're focused on the health and well-being of you and your family...

Read More

Community Service Plan

Community Service Plan

Each year, Mount Sinai South Nassau prepares a Community Service Plan that outlines...

Read More

Mission, Vision & Values

Mission, Vision & Values

Mount Sinai South Nassau is committed to providing quality, comprehensive and easily accessible...

Read More