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Exceptional Heart

About Us

Joint Commission 2013Saint Mary’s Hospital is a Catholic, not-for-profit, acute care community teaching hospital that has been serving patients in Waterbury, CT and our surrounding communities since 1909. In 2016, Saint Mary's became part of Trinity Health Of New England, an integrated health care delivery system that is a member of Trinity Health, Livonia, MI, one of the largest multi-institutional Catholic health care delivery systems in the nation. From the moment you enter our doors you will notice what makes us different; the warmth and attentiveness of our physicians and nurses, the cleanliness of our facilities, and the way we make patients and their families feel that they are truly being cared for - like a member of our family.

Our commitment to patient safety and satisfaction, dedication to offering the latest in cutting-edge technology, and focus on providing high quality care at the lowest possible cost, makes Saint Mary’s an excellent choice for all your healthcare needs.

Saint Mary’s is proud to offer:

Our Mission

We, Trinity Health and Saint Mary's Hospital, serve together in the spirit of the Gospel as a compassionate and transforming healing presence within our communities.

Our Core Values


We honor the sacredness and dignity of every person.

Commitment to Those Who are Poor

We stand with and serve those who are poor, especially those most vulnerable.


We foster right relationships to promote the common good, including sustainability of Earth.


We honor our heritage and hold ourselves accountable for the human, financial and natural resources entrusted to our care.


We are faithful to who we say we are.

Our Vision

As a mission-driven innovative health organization, we will become the national leader in improving the health of our communities and each person we serve. We will be the most trusted health partner for life.

Buildings, programs and services alone do not tell the whole story of Saint Mary’s Hospital. It is the people – the physicians, nurses, staff, volunteers and board members who continue to define what makes the care at Saint Mary’s beyond measure.

WATCH: Our History

Saint Mary's Historical Timeline

Since 1907, Saint Mary’s Hospital has been a vital part of the fabric of Greater Waterbury, CT. The hospital Right Reverend Monsignor William J. Slocum, pastor of Immaculate Conception Church in Waterbury, purchased property on Union and Franklin Streets for $20,000 to fulfill his vision of establishing a hospital in the city’s industrial core. Two years later, Saint Mary’s opened its doors under the direction of the Sisters of Saint Joseph of Chambery. The Waterbury American reported, “[February 28, 1909] was a happy day for Waterbury…Everyone who visited the new hospital agreed that Waterbury was to be congratulated on having so modern and so well equipped an institution in the heart of the city...”

Saint Mary’s Hospital continues to be a pioneer in Greater Waterbury, expanding its network of medical services, forging alliances with key healthcare partners, investing in new technology and exploring new ways to enhance access to care, while providing a spiritually enriched environment for our patients.

  • 1907– Construction begins at Union and Franklin Streets.
  • 1909– The new 120-bed hospital opens with 14 staff members. March 2nd the first 4 patients are admitted by horse-drawn ambulance. March 3rd the School of Nursing opens.
  • 1922– A new wing, the present Xavier building, is dedicated.
  • 1941– The Sacred Heart building is dedicated.
  • 1953– A new convent, the present Lawlor building, is dedicated.
  • 1963– The O’Brien building is dedicated.
  • 1973– The hospital gains 58 beds with expansion of the O’Brien wing.
  • 1979– A parking garage and passageway over Scovill Street are completed.
  • 1982– Kenny Pavilion is dedicated.
  • 1987– The hospital begins offering advanced trauma care utilizing a Life Star helicopter.
  • 1998 – The Yale Medicine/Pediatrics residency training program begins.
  • 1999 – A new cardiac catheterization lab opens in the Sacred Heart building, and the region’s first open MRI is made available to patients.
  • 2001– The Birthplace opens, becoming Connecticut’s only in-hospital midwifery care center accredited by the Commission for the Accreditation of Birth Centers.

    The groundbreaking for the Harold Leever Regional Cancer Center takes place

  • 2004 – The Wound Center opens to provide wound care and hyberbaric services.
  • 2005 – Through its affiliation with the Heart Center of Greater Waterbury, Saint Mary’s begins offering angioplasty and open heart surgery.
  • 2006 – The Wolcott Health and Wellness Center opens, including a walk-in center, physical therapy, sleep disorders center and primary care services. The Interventional Radiology suite is installed offering minimally-invasive treatment options.
  • 2008 – Saint Mary’s lobby is renovated to provide a warm welcome to patients and visitors.
  • 2009 Connecticut Children’s Medical Center opens its Waterbury unit at Saint Mary’s Hospital.
    The hospital celebrates 100 years of service to the Waterbury community.
  • 2010 - present– Saint Mary’s continues to innovate with the addition of robotic assisted surgery services, the new O-Arm® Surgical Imaging System, and national health care awards for quality and value.

You can also read all about our doctors, our patients and their stories in the latest issue of Thrive, available now on e-newstands!