Mather Hospital Executive and Leadership Team

August, 2026

Leadership Overview

Mather Hospital has 4 executives leading key functions including information technology, financial management, and hospital administration.

Dedicated to clinical excellence, Mather Hospital delivers advanced orthopedic, bariatric, and cardiac care. This institution prioritizes patient safety and personalized medical attention to elevate community health standards across the region.

Leadership Roles at Mather Hospital

  • Vice President & Chief Financial Officer - Brian Defeo
  • President - Kevin McGeachy
  • Chief Information Officer - Wayne Seppala
  • Vice President, Information Services & Chief Information Officer - Thomas Heiman
  • Brian Defeo - Vice President & Chief Financial Officer

    Brian Defeo, the Vice President & Chief Financial Officer at Mather Hospital, manages the fiscal health and resource allocation for all clinical departments. Overseeing the budgeting process for orthopedics and bariatric surgery programs, the Vice President & Chief Financial Officer ensures financial sustainability while maintaining high standards of patient care. This leadership role involves analyzing revenue cycles and optimizing operational expenditures to support the hospital's mission. By implementing cost-effective procurement strategies, Brian Defeo directly impacts the availability of advanced medical equipment and specialized staff. The Vice President & Chief Financial Officer collaborates with the Board to evaluate capital investments that expand service capabilities. Through rigorous financial oversight, Defeo supports the institution's ability to provide compassionate care to the local community. Ultimately, Defeo secures the economic stability necessary for the hospital to continue delivering high-quality medical services and investing in future healthcare innovations.

    Kevin McGeachy - President

    Kevin McGeachy, the President at Mather Hospital, provides executive oversight for all clinical and administrative functions. Directing the overall strategy for the hospital, the President ensures alignment with Northwell Health standards to deliver exceptional healthcare services. This leadership role involves fostering a culture of excellence and compassion among the medical staff. By championing initiatives that improve patient safety and quality ratings, Kevin McGeachy drives the institution toward superior clinical outcomes. The President coordinates with other C-suite leaders to integrate specialized care across orthopedics, heart care, and neurosciences. Through the management of community partnerships, McGeachy expands the reach of personalized medical attention to a broader patient base. Ultimately, McGeachy guides the hospital's mission to elevate care beyond expectations, ensuring the facility remains a leading healthcare provider that consistently meets the evolving needs of the local population.
    Kevin McGeachy

    Wayne Seppala - Chief Information Officer

    Wayne Seppala, the Chief Information Officer at Mather Hospital, directs the digital infrastructure supporting complex medical operations. Overseeing the integration of electronic health records, the Chief Information Officer ensures seamless data flow between departments to improve patient outcomes. This leadership role involves managing cybersecurity protocols to protect sensitive medical information across the entire facility. By optimizing digital workflows, Wayne Seppala directly impacts the efficiency of clinical staff and administrative teams. The Chief Information Officer collaborates with the broader Northwell Health network to implement standardized technology solutions that enhance diagnostic accuracy. Through the deployment of advanced analytics, Seppala drives data-driven decision-making processes that support the hospital's commitment to high-quality care. Ultimately, Seppala secures the technological foundation necessary for delivering modern, reliable healthcare services to the local community while maintaining rigorous compliance standards for all digital health systems.

    Thomas Heiman - Vice President, Information Services & Chief Information Officer

    Thomas Heiman, the Vice President, Information Services & Chief Information Officer at Mather Hospital, architects the strategic roadmap for enterprise-wide information systems. Managing the technical architecture for neurosciences and heart care units, the Vice President, Information Services & Chief Information Officer ensures high availability of critical diagnostic tools. This leadership role involves overseeing large-scale software implementations that streamline patient intake and surgical scheduling. By modernizing legacy systems, Thomas Heiman improves the speed and reliability of clinical communications. The Vice President, Information Services & Chief Information Officer coordinates with executive leadership to align technology investments with long-term institutional growth goals. Through the oversight of regional network connectivity, Heiman facilitates access to specialized medical resources for patients. Ultimately, Heiman maintains the robust digital environment required for the hospital to provide exceptional, personalized medical attention while supporting the complex operational needs of a leading healthcare provider.
    Thomas Heiman

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    Frequently Asked Questions Regarding Mather Hospital Top Executives and Leadership Team

    Who leads Mather Hospital?
    Mather Hospital is led by Brian Defeo (Vice President & Chief Financial Officer), along with executives such as Kevin McGeachy (President) and Wayne Seppala (Chief Information Officer).
    Who is part of Mather Hospital’s executive team?
    The executive team of Mather Hospital includes leaders such as Brian Defeo (Vice President & Chief Financial Officer), Kevin McGeachy (President), Wayne Seppala (Chief Information Officer) and other senior executives.
    How many executives does Mather Hospital have?
    Mather Hospital has 4 executives leading key business areas.
    What roles are included in Mather Hospital’s leadership team?
    The leadership team of Mather Hospital includes roles such as Vice President & Chief Financial Officer, President, Chief Information Officer, Vice President, Information Services & Chief Information Officer.