Dedicated to Patient-Focused Care in Smithtown
Catholic Health’s St. Catherine of Siena Hospital is committed to providing the highest quality of care. Patients are at the center of everything we do. The future is bright as our hospital continues to expand services and programs to serve Smithtown and the surrounding communities.
Our hospital offers clinical excellence in:
- Brain & Spine
- Breast Health
- Heart & Vascular
- Kidney Care
- Orthopedics
- Robotic Surgery
- Sleep Medicine
- Weight Loss Program & Surgery
- Wound care
St. Francis Heart Center
The St. Francis Heart Center at St. Catherine of Siena Hospital gives you access to the same cardiac care services that make St. Francis Hospital & Heart Center® a nationally recognized leader in cardiovascular services. Our chest pain center provides immediate care for patients presenting with a heart attack.
View Catholic Health cardiology services
Wound Care
The Center for Hyperbaric Medicine & Wound Healing at St. Catherine of Siena Hospital treats patients who have chronic or complex wounds.
View Catholic Health wound care services
Breast Health
St. Catherine of Siena Hospital’s Breast Health Program provides advanced, comprehensive care overseen by a team of physicians, breast surgical oncologists and breast reconstruction surgeons.
Explore St. Catherine of Siena Hospital
View patients & visitors information
View Root & Sprig dining options
Latest News
![St. Catherine of Siena Ceremonial Ribbon Cutting](/sites/default/files/styles/featured_story/public/2024-06/scs-ed2-1-1.jpg?h=c9f93661&itok=7hyQpsRA)
St. Catherine of Siena Hospital Hosts Ceremonial Ribbon Cutting for $1 Million Emergency Department Renovation
Ceremonial ribbon cutting for its $1 million Emergency Department (ED) renovation.
![George Marchelos St Catherine of Siena Wound Care](/sites/default/files/styles/featured_story/public/2024-04/george-marchelos-655x545.png?h=f8d4c038&itok=HX8zkXg_)
Specialized Care for Special Wounds
George Marchelos needed three amputations on his left foot due to an infection resulting from diabetes.
![John Murphy](/sites/default/files/styles/featured_story/public/2024-04/john-murphy-wound-care.jpg?h=fbf4b26c&itok=E-NC6F5b)
Radiation Cystitis Healed With Pressurized Oxygen
John Murphy underwent treatment at Center for Hyperbaric Medicine & Wound Healing at St. Charles Hospital for his radiation cystitis
![St. Catherine of Siena Hospital Wound Care](/sites/default/files/styles/featured_story/public/2024-03/_dsc7713-enhanced-nr-copy.jpg?h=7f3b84c3&itok=ykZEX5k0)
A Journey Toward Healing With Hyperbaric Oxygen Therapy
Dawn Nilsson received hyperbaric oxygen (HBO) therapy for radiation proctitis
![theresa small and staff](/sites/default/files/styles/featured_story/public/2024-01/terri-small-and-team-web.jpg?h=8fd49f4e&itok=Lu5j0P21)
Living the Mission: Teresa Small
Teresa Small is a Dietetic Supervisor at St. Catherine of Siena Hospital.
![Nancy Hilsenbeck on mountain](/sites/default/files/styles/featured_story/public/2023-10/img_0243-1-1.jpg?h=502e75fa&itok=5sRiXCLf)
Back On Top After Breast Cancer Diagnosis
Nancy Hilsenbeck of Oakdale, NY, knows the importance of routine breast cancer screenings.