Clinical Excellence, Patient Focused Care
St. Catherine of Siena Hospital (Smithtown, NY) offers Long Islanders the highest level of care. Our doctors, nurses and supporting medical staff deliver clinical excellence in numerous specialities.
Services & Programs
Comprehensive care to meet the unique health needs of each patient.
Our emergency department is open 24 hours a day, seven days a week, for adult and pediatric emergencies.
Radiology & Lab
Convenient access to comprehensive diagnostic and lab services.
Center for Hyperbaric Medicine & Wound Healing
All the care you need in one location for all types of wound care.
Sleep Disorders Center
A comfortable, home-like setting to help diagnose and treat sleep disorders.
Unique to our community. The unit, located within the hospital, gives convenient access to a team of experts and immediate emergency care if necessary.
Catholic Health Physician Partners Ambulatory Care at Commack
Access to St. Catherine of Siena Hospital's excellence in diagnostic imaging as well as St. Charles Hospital's renowned orthopedic and rehabilitative care.
Discover why so many Long Islanders trust their health care needs to St. Catherine of Siena Hospital. We are rated by U.S. News & World Report as high performing for COPD, heart failure and kidney failure.