Mount Sinai Health System

Exterior signage for Mount Sinai Health System at a New York City medical campus, representing one of the region’s leading academic healthcare networks serving patients across the metropolitan area, including Long Island.
Exterior signage for Mount Sinai Health System at a New York City medical campus, representing one of the region’s leading academic healthcare networks serving patients across the metropolitan area, including Long Island. File photo: Bluestork, licensed.

Mount Sinai Health System

Mount Sinai Health System is a leading academic medical network based in New York City, providing advanced patient care, medical education, and research across the region, including parts of Long Island. While primarily centered in Manhattan, Mount Sinai has expanded its presence into Nassau County, offering residents access to high-quality care through affiliated hospitals and outpatient facilities.

The system is anchored by the Icahn School of Medicine at Mount Sinai and is widely recognized for excellence in specialties such as cardiology, oncology, orthopedics, and neurology. Through a combination of hospital-based care and community-focused services, Mount Sinai delivers a comprehensive approach to healthcare across the greater New York metropolitan area.

Mount Sinai on Long Island

Mount Sinai Health System’s presence on Long Island is centered around Mount Sinai South Nassau in Oceanside, a full-service hospital that provides emergency care, surgical services, and specialty treatment programs for residents of Nassau County and surrounding communities.

  • Mount Sinai South Nassau (Oceanside)
  • Mount Sinai outpatient and specialty care centers (select Long Island locations)

These facilities extend Mount Sinai’s reach beyond New York City, allowing patients to access a nationally recognized healthcare system closer to home while maintaining connections to its flagship Manhattan hospitals.

Services and Specialties

Mount Sinai offers a wide range of medical services, including emergency medicine, cardiovascular care, cancer treatment, orthopedics, neurology, and women’s health. Its hospitals are known for integrating research-driven treatments with patient-centered care, often providing access to advanced therapies and clinical trials.

The system also emphasizes coordinated care, enabling patients to move seamlessly between community-based facilities on Long Island and specialized services in New York City when needed.

Academic and Research Leadership

As part of a major academic medical institution, Mount Sinai Health System is deeply involved in medical research and education. The Icahn School of Medicine at Mount Sinai is a leader in biomedical research, contributing to advancements in areas such as cancer, cardiovascular disease, and precision medicine.

This integration of education, research, and clinical care ensures that patients benefit from some of the latest medical innovations available.

Key Facts & Details

CategoryInformation
OrganizationMount Sinai Health System
HeadquartersNew York, NY
TypeAcademic medical center
Coverage AreaNew York City and Long Island
AffiliationIcahn School of Medicine at Mount Sinai
Long Island FacilityMount Sinai South Nassau (Oceanside)
ServicesEmergency care, cardiology, oncology, orthopedics, neurology
Research FocusPrecision medicine, cancer, cardiovascular disease
Websitemountsinai.org

Mount Sinai Health System adds another layer to Long Island’s healthcare landscape, connecting local patients to one of the nation’s most respected academic medical institutions while expanding access to advanced care throughout the region.