Niagara Health Executive and Leadership Team

October, 2026

Leadership Overview

Niagara Health has 7 executives leading key functions including strategy, financial oversight, digital transformation, medical operations, technology support, labor relations, and community health services.

Committed to excellence in regional patient care, Niagara Health advances academic research and innovative clinical practices to improve health outcomes across the entire community network.

Leadership Roles at Niagara Health

  • President & Chief Executive Officer - Lynn Guerriero
  • Chief Financial Officer - Angela Zangari
  • President, Ona Local 26 Niagara Health - Loretta Tirabassi
  • Executive VP, Digital Transformation & Chief Information Officer - Sonali Kohli
  • Executive Vice President Medicine and Chief of Staff - Kevin Chan
  • Chief Technology Officer, Support - Karen Garner
  • Executive VP, Quality, Community Decelopment, Mental Health & Addictions - Linda Boich
  • Lynn Guerriero - President & Chief Executive Officer

    Lynn Guerriero, the President & Chief Executive Officer at Niagara Health, directs the overarching strategic vision for this multi-site academic healthcare provider. Overseeing the integration of clinical services and research initiatives, the President & Chief Executive Officer ensures alignment with regional health mandates. This leadership role involves managing complex stakeholder relationships and driving organizational growth across the Canadian landscape. By fostering partnerships with academic institutions, Lynn Guerriero strengthens the commitment to teaching and innovation. The President & Chief Executive Officer maintains operational excellence by coordinating with the board to optimize resource allocation. Through consistent focus on patient-centered care, Guerriero elevates the standard of service delivery. This executive leadership ensures that the organization remains a cornerstone of community health, effectively balancing immediate clinical demands with long-term institutional goals for the entire regional network.

    Angela Zangari - Chief Financial Officer

    Angela Zangari, the Chief Financial Officer at Niagara Health, manages the fiscal health and long-term economic sustainability of this academic healthcare system. Overseeing budget development and capital investment strategies, the Chief Financial Officer ensures that financial resources support the expansion of virtual services and community-based care. This leadership role involves rigorous analysis of operational costs to maintain efficiency across multiple hospital sites. By implementing robust financial controls, Angela Zangari secures the necessary funding for research and innovation projects. The Chief Financial Officer collaborates with executive leadership to align fiscal planning with the broader mission of regional health improvement. Zangari monitors economic trends to mitigate risks and maximize the impact of healthcare investments. Through precise financial oversight, the Chief Financial Officer guarantees that the organization possesses the stability required to deliver high-quality medical services to the diverse population served.

    Loretta Tirabassi - President, Ona Local 26 Niagara Health

    Loretta Tirabassi, the President, Ona Local 26 Niagara Health at Niagara Health, represents the interests of nursing professionals within this academic healthcare system. Overseeing labor relations and staff advocacy, the President, Ona Local 26 Niagara Health ensures that the workforce remains engaged and supported in the delivery of patient care. This leadership role involves negotiating agreements and fostering a collaborative environment between staff and administration. By championing the needs of nurses, Loretta Tirabassi contributes to the overall stability and morale of the clinical teams. The President, Ona Local 26 Niagara Health coordinates with executive leadership to address staffing challenges and improve workplace conditions across all sites. Tirabassi promotes professional development and adherence to high standards of nursing practice. Through active engagement with the workforce, the President, Ona Local 26 Niagara Health plays a vital role in maintaining the quality of care provided to the community.

    Sonali Kohli - Executive VP, Digital Transformation & Chief Information Officer

    Sonali Kohli, the Executive VP, Digital Transformation & Chief Information Officer at Niagara Health, architects the technological infrastructure necessary for modern academic healthcare delivery. Overseeing the implementation of advanced digital platforms, the Executive VP, Digital Transformation & Chief Information Officer drives the transition toward integrated virtual services. This leadership role involves securing data systems and optimizing information flow to enhance clinical decision-making across all hospital sites. By spearheading innovation in health informatics, Sonali Kohli improves patient access and operational efficiency. The Executive VP, Digital Transformation & Chief Information Officer coordinates with clinical teams to ensure that digital tools directly support research and teaching objectives. Kohli manages the deployment of scalable software solutions to meet the evolving needs of the regional network. Through strategic technology adoption, the Executive VP, Digital Transformation & Chief Information Officer empowers the organization to maintain a competitive edge in digital health.
    Sonali Kohli

    Kevin Chan - Executive Vice President Medicine and Chief of Staff

    Kevin Chan, the Executive Vice President Medicine and Chief of Staff at Niagara Health, governs the clinical standards and medical practices within this academic healthcare environment. Overseeing the physician workforce and medical departments, the Executive Vice President Medicine and Chief of Staff ensures that patient care remains the primary focus across all regional sites. This leadership role involves managing medical staff performance and fostering a culture of continuous learning and research. By aligning clinical protocols with evidence-based medicine, Kevin Chan drives improvements in health outcomes. The Executive Vice President Medicine and Chief of Staff collaborates with other executives to integrate medical services with community-based initiatives. Chan monitors clinical quality metrics to uphold the highest standards of safety and efficacy. Through dedicated medical leadership, the Executive Vice President Medicine and Chief of Staff strengthens the academic mission and ensures the delivery of exceptional care to the community.

    Karen Garner - Chief Technology Officer, Support

    Karen Garner, the Chief Technology Officer, Support at Niagara Health, directs the maintenance and optimization of the technical systems that underpin daily hospital operations. Overseeing the support infrastructure, the Chief Technology Officer, Support ensures that all hardware and technical services remain functional to support clinical staff and patient care. This leadership role involves managing the technical teams responsible for system reliability across the entire network of facilities. By streamlining support processes, Karen Garner minimizes downtime and enhances the efficiency of hospital workflows. The Chief Technology Officer, Support works closely with other departments to ensure that technical support aligns with the broader innovation goals of the organization. Garner implements proactive maintenance strategies to address the complex needs of a growing academic center. Through consistent technical oversight, the Chief Technology Officer, Support provides the foundational stability required for the successful delivery of regional healthcare services.

    Linda Boich - Executive VP, Quality, Community Decelopment, Mental Health & Addictions

    Linda Boich, the Executive VP, Quality, Community Decelopment, Mental Health & Addictions at Niagara Health, leads the strategic initiatives focused on patient safety, community outreach, and specialized behavioral health services. Overseeing the quality assurance programs, the Executive VP, Quality, Community Decelopment, Mental Health & Addictions ensures that all services meet rigorous clinical standards. This leadership role involves expanding mental health and addiction programs to better serve the regional population. By fostering community partnerships, Linda Boich drives the development of integrated care models that extend beyond hospital walls. The Executive VP, Quality, Community Decelopment, Mental Health & Addictions collaborates with clinical and administrative leaders to improve patient experiences and outcomes. Boich monitors performance metrics to ensure continuous improvement in service delivery. Through dedicated focus on quality and community health, the Executive VP, Quality, Community Decelopment, Mental Health & Addictions strengthens the organization's impact on the well-being of the entire region.

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    Frequently Asked Questions Regarding Niagara Health Top Executives and Leadership Team

    Who leads Niagara Health?
    Niagara Health is led by Lynn Guerriero (President & Chief Executive Officer), along with executives such as Angela Zangari (Chief Financial Officer) and Loretta Tirabassi (President, Ona Local 26 Niagara Health).
    Who is part of Niagara Health’s executive team?
    The executive team of Niagara Health includes leaders such as Lynn Guerriero (President & Chief Executive Officer), Angela Zangari (Chief Financial Officer), Loretta Tirabassi (President, Ona Local 26 Niagara Health) and other senior executives.
    How many executives does Niagara Health have?
    Niagara Health has 7 executives leading key business areas.
    What roles are included in Niagara Health’s leadership team?
    The leadership team of Niagara Health includes roles such as President & Chief Executive Officer, Chief Financial Officer, President, Ona Local 26 Niagara Health, Executive VP, Digital Transformation & Chief Information Officer, Executive Vice President Medicine and Chief of Staff.