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About St. Catherine

Catholic Health Services of Long Island (CHS) was founded in 1997 to oversee the Diocese of Rockville Centre’s healthcare organization which now includes six hospitals, three nursing homes, a regional home care and hospice group and a community based agency for persons with special needs. More than 15,000 staff and 3,300 medical professionals work within the CHS system. 

St. Catherine of Siena Medical Center is a proud member of Catholic Health Services of Long Island, and has served the residents of the Smithtown area for more than 50 years.

St. Catherine’s is located on 110 acres on the north shore of Long Island in Smithtown. The campus is comprised of a 318-bed not-for-profit community hospital; a 240-bed nursing and rehabilitation care center; and a 60,000 square foot medical office building. Our nurses, physicians and support staff are devoted to providing advanced health care in an environment of compassion to our patients, their families and our community.