Executive Team

St. Vincent’s executive team members serve as leaders for the entire system in its efforts to provide Healthcare That Works, Healthcare That is Safe, Healthcare That Leaves No One Behind.

In a spirit of collaboration and compassion, the team seeks to make decisions that will support the highest level of care and positively impact patients and families, employees and the community.

Fulfilling the mission of the Medical Center’s patron, St. Vincent de Paul, and carrying on the legacy of leadership of its founders, the Daughters of Charity, the Executive Team commits itself to serving as the compass for the organization, and to supporting the goal of spiritually-centered, holistic care for all persons, especially those who struggle most.

Bill Jennings

William Jennings

Senior Vice President, Hartford HealthCare, President, Fairfield Region

Mr. Jennings joined Hartford HealthCare as president of the Fairfield Region in July of 2021. Prior to that, he served as executive vice president for Tower Health, a six-hospital system in Pennsylvania, and president and CEO of the system’s flagship 714-bed Reading Hospital. Read More >>

Teresa Fuller

Teresa Calendrillo-Fuller, MSN, RN, CPXP

Vice President, Patient Care Services

Teresa Fuller, MSN, RN, CPXP joined Hartford HealthCare in 2006 as a clinical nurse manager at Charlotte Hungerford Hospital. She has more than 20 years of experience in nursing, most recently serving as interim Vice President of Patient Care Services at Backus and Windham hospitals. Read More >>

Christopher Given

Regional Vice President, Finance, Fairfield Region

Christopher Given joined St. Vincent’s in 2009 as the director of budget & business intelligence, and most recently served as senior vice president of Finance. Read More >>

Daniel S. Gottschall, MD

Vice President, Medical Affairs

Dr. Gottschall received his medical degree from Hahnemann University School of Medicine in Philadelphia and completed his internship and residency at the University of Connecticut.  Read More >>

Karen Kaiser

Karen Kaiser

Vice President, Philanthropy, Fairfield Region

Karen Kaiser joined Hartford HealthCare in 2022 as the vice president of philanthropy for the Fairfield Region. She is an accomplished development professional with extensive experience working with local, federal and state leaders, boards of directors, boards of trustees, academic faculty and senior executive management. Read More >>

John Rossi

John F. Rossi, PMP, MBA

Vice President, Fairfield and System Operations, Hartford HealthCare

John joined Hartford HealthCare in 2014 to build a system project management office (PMO) to best manage top system priorities and resources. Read More >>

Deborah Lee

Deborah L. Lee

Vice President, Human Resources

Deborah Lee joined Hartford HealthCare in 2020 as the Vice President of Human Resources for the Fairfield Region. She brings to Hartford HealthCare extensive experience in leading cultural change. Read More >>

Ryan O'Connell

Ryan O'Connell, MD

Regional Medical Director of Quality, Fairfield Region

Ryan O’Connell, MD, joined Hartford HealthCare in 2023 as the regional medical director of quality for the Fairfield Region. In this role, Dr. O’Connell leads the quality team and case management in the Fairfield Region. Read More >>

Samuel Pueringer, MHASamuel Pueringer, MHA

Director of Strategy, Planning, Business Development and Communications, HHCMG and Fairfield Region

Samuel earned his BA from St. Olaf College in Minnesota, and his Master of Health Administration from Tulane University in Louisiana. Prior to joining Hartford HealthCare, Samuel served in leadership roles in healthcare operations, strategy, finance and consulting. Read More >>

St. Vincent’s Medical Center