Kaweah Delta Health Executive and Leadership Team

August, 2026

Leadership Overview

Kaweah Delta Health has 4 executives leading key functions including operations, medical affairs, human resources, and medical staff leadership.

Driven by a commitment to community well-being, Kaweah Delta Health focuses on delivering advanced medical care and fostering a culture of compassion, significantly impacting patient outcomes and regional health standards.

Leadership Roles at Kaweah Delta Health

  • Chief Operating Officer - Thomas Rayner
  • Vice-Chief of Staff - William Roach
  • Vice President - Chief Human Resources Officer - Dianne Cox
  • Chief Medical Officer - Paul Stefanacci
  • Thomas Rayner - Chief Operating Officer

    Thomas Rayner, the Chief Operating Officer at Kaweah Delta Health, directs all operational facets of the hospital system. Overseeing daily functions, Rayner ensures the efficient delivery of patient care, managing resources and optimizing workflows across all departments. This leadership role involves implementing strategic initiatives to enhance operational performance and patient satisfaction, directly supporting the hospital's mission of providing high-quality healthcare. Thomas Rayner drives improvements in service delivery and facility management, ensuring compliance with healthcare regulations and standards. The Chief Operating Officer's responsibilities extend to coordinating interdepartmental efforts, fostering collaboration among clinical and administrative teams to achieve organizational goals. By focusing on operational excellence, Rayner contributes significantly to the hospital's capacity to serve the Visalia community and surrounding regions.
    Thomas Rayner

    William Roach - Vice-Chief of Staff

    William Roach, the Vice-Chief of Staff at Kaweah Delta Health, supports the Chief of Staff in overseeing the medical staff's clinical operations and professional conduct. Roach collaborates with hospital administration to ensure the highest standards of medical practice are maintained, contributing to patient safety and quality of care. This position involves advocating for physician needs and facilitating communication between medical practitioners and hospital leadership. William Roach plays a crucial part in the governance of the medical staff, participating in policy development and review processes. The Vice-Chief of Staff's role is vital in maintaining the integrity of clinical services and fostering a collaborative environment for healthcare providers. Roach's involvement ensures that the medical staff's perspective is integrated into strategic decision-making, reinforcing Kaweah Delta Health's commitment to exceptional patient outcomes.

    Dianne Cox - Vice President - Chief Human Resources Officer

    Dianne Cox, the Vice President - Chief Human Resources Officer at Kaweah Delta Health, leads all human capital strategies and initiatives. Cox directs the development and implementation of programs focused on talent acquisition, employee engagement, compensation, and benefits, ensuring a robust and supportive work environment. This critical role involves fostering a culture that aligns with the hospital's mission and values, attracting and retaining skilled healthcare professionals. Dianne Cox oversees employee relations, performance management, and organizational development, crucial for maintaining high levels of staff morale and productivity. The Chief Human Resources Officer's strategic oversight ensures that Kaweah Delta Health remains an employer of choice, capable of delivering exceptional patient care through its dedicated workforce. Cox's leadership in human resources directly impacts the hospital's ability to meet the evolving healthcare needs of the community.

    Paul Stefanacci - Chief Medical Officer

    Paul Stefanacci, the Chief Medical Officer at Kaweah Delta Health, provides executive leadership for all clinical services and medical affairs. Stefanacci directs the strategic planning and execution of initiatives aimed at enhancing patient care quality, safety, and clinical outcomes across the health system. This role involves collaborating closely with physicians, nurses, and other healthcare professionals to ensure adherence to best practices and regulatory standards. Paul Stefanacci champions clinical innovation and evidence-based medicine, driving improvements in patient treatment protocols and healthcare delivery models. The Chief Medical Officer's purview includes medical staff credentialing, quality assurance, and the integration of new medical technologies. Stefanacci's leadership is fundamental to maintaining Kaweah Delta Health's reputation for excellence in healthcare and its capacity to serve the region effectively.
    Paul Stefanacci

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    Frequently Asked Questions Regarding Kaweah Delta Health Top Executives and Leadership Team

    Who leads Kaweah Delta Health?
    Kaweah Delta Health is led by Thomas Rayner (Chief Operating Officer), along with executives such as William Roach (Vice-Chief of Staff) and Dianne Cox (Vice President - Chief Human Resources Officer).
    Who is part of Kaweah Delta Health’s executive team?
    The executive team of Kaweah Delta Health includes leaders such as Thomas Rayner (Chief Operating Officer), William Roach (Vice-Chief of Staff), Dianne Cox (Vice President - Chief Human Resources Officer) and other senior executives.
    How many executives does Kaweah Delta Health have?
    Kaweah Delta Health has 4 executives leading key business areas.
    What roles are included in Kaweah Delta Health’s leadership team?
    The leadership team of Kaweah Delta Health includes roles such as Chief Operating Officer, Vice-Chief of Staff, Vice President - Chief Human Resources Officer, Chief Medical Officer.