Delta Health System Executive and Leadership Team

September, 2026

Leadership Overview

Delta Health System has 8 executives leading key functions including strategy, clinical operations, financial management, and human resources.

Committed to regional medical excellence, Delta Health System delivers high-quality healthcare services across the tri-state Delta region while maintaining a focus on community-centered care and operational sustainability.

Leadership Roles at Delta Health System

  • Interim Chief Executive Officer - Iris Stacker
  • Chief Financial Officer - Tod Beasley
  • Chief of Staff - Brett Zepponi
  • Chief Human Resources Officer - Melanie Mathews
  • Vice Chief of Staff - Maroun Hayek
  • Vice Chief of Staff - Jeffery Doolittle
  • Immediate Chief of Staff - Wayne Dotson
  • Chief Human Resources Officer - Chrissy Nicholson
  • Iris Stacker - Interim Chief Executive Officer

    Iris Stacker, the Interim Chief Executive Officer at Delta Health System, directs the overarching strategic vision for the entire hospital network. Overseeing the integration of medical services across The Medical Center, Northwest Regional, and Highland Hills, the Interim Chief Executive Officer ensures consistent delivery of high-quality care. Stacker manages complex relationships with the Board to align clinical outcomes with long-term institutional goals. By optimizing resource allocation across the tri-state Delta region, the Interim Chief Executive Officer drives operational efficiency and maintains the standard of hometown hospitality. Iris Stacker monitors performance metrics to guarantee that patient care remains the primary focus of all administrative decisions. Through rigorous oversight of hospital operations, the Interim Chief Executive Officer secures the financial and clinical health of the organization, ensuring that the mission of serving local communities remains the central priority for all staff members.

    Tod Beasley - Chief Financial Officer

    Tod Beasley, the Chief Financial Officer at Delta Health System, manages the fiscal health and long-term economic sustainability of the entire hospital network. Overseeing revenue cycle management, capital investments, and budgetary planning, the Chief Financial Officer ensures that resources support the delivery of high-quality medical services. Beasley analyzes financial data to guide strategic decisions regarding facility expansion and technology upgrades across the tri-state Delta region. By implementing cost-control measures and optimizing billing processes, the Chief Financial Officer maintains the financial stability necessary for continued community service. Tod Beasley collaborates with other executive leaders to align financial performance with the mission of providing accessible healthcare. This role involves rigorous oversight of financial reporting and compliance, ensuring that the organization remains fiscally responsible while investing in the talented physicians and staff who provide essential care to the citizens and communities served by the network.

    Brett Zepponi - Chief of Staff

    Brett Zepponi, the Chief of Staff at Delta Health System, coordinates communication between the medical staff and executive leadership to streamline clinical governance. Managing the credentialing and performance standards for physicians, the Chief of Staff ensures that all medical practitioners adhere to the rigorous quality benchmarks required by the network. Zepponi facilitates interdepartmental collaboration to improve patient throughput and clinical safety protocols. By aligning physician activities with the broader strategic objectives of the organization, the Chief of Staff optimizes the delivery of medical services across the tri-state Delta region. Brett Zepponi monitors clinical workflows to identify opportunities for process improvement and resource optimization. This leadership role involves resolving complex operational challenges within the medical staff structure, ensuring that the quality of care remains high while fostering a culture of professional excellence and accountability throughout the entire hospital system.

    Melanie Mathews - Chief Human Resources Officer

    Melanie Mathews, the Chief Human Resources Officer at Delta Health System, architects the talent acquisition and workforce development strategies necessary to support a network of talented physicians and staff. Overseeing employee relations, benefits administration, and organizational culture, the Chief Human Resources Officer ensures that the workforce remains aligned with the mission of providing high-quality medical services. Mathews drives initiatives to improve staff retention and professional development across the tri-state Delta region. By fostering a supportive work environment, the Chief Human Resources Officer enhances the delivery of care characterized by hometown hospitality. Melanie Mathews collaborates with department heads to address staffing needs and optimize human capital management. This leadership role involves implementing policies that promote workplace safety, diversity, and operational efficiency, ensuring that the organization attracts and retains the skilled professionals required to meet the evolving healthcare needs of the communities served by the system.

    Maroun Hayek - Vice Chief of Staff

    Maroun Hayek, the Vice Chief of Staff at Delta Health System, supports the clinical leadership team by focusing on the optimization of surgical and procedural services. Overseeing the implementation of evidence-based medical practices, the Vice Chief of Staff ensures that patient outcomes meet the highest standards of quality across the tri-state Delta region. Hayek manages the integration of new medical technologies into daily clinical workflows to improve diagnostic accuracy and treatment efficacy. By facilitating communication between surgical teams and hospital administration, the Vice Chief of Staff drives improvements in operational efficiency and patient safety. Maroun Hayek monitors clinical performance indicators to identify areas for professional development among the medical staff. This leadership role involves active participation in quality assurance committees, ensuring that the care provided at The Medical Center and other facilities remains consistent with the mission of delivering exceptional medical services to the local community.

    Jeffery Doolittle - Vice Chief of Staff

    Jeffery Doolittle, the Vice Chief of Staff at Delta Health System, directs the clinical oversight of internal medicine and primary care services across the network. Overseeing the coordination of patient care pathways, the Vice Chief of Staff ensures that the transition between inpatient and outpatient services remains seamless for the citizens of the tri-state Delta region. Doolittle manages the implementation of chronic disease management programs to improve long-term health outcomes for the community. By aligning primary care protocols with the broader strategic goals of the organization, the Vice Chief of Staff enhances the quality of care provided by the network. Jeffery Doolittle collaborates with the medical staff to standardize treatment plans and improve patient satisfaction scores. This leadership role involves evaluating clinical data to drive improvements in service delivery, ensuring that the hospital system maintains its reputation for high-quality care and hometown hospitality.

    Wayne Dotson - Immediate Chief of Staff

    Wayne Dotson, the Immediate Chief of Staff at Delta Health System, provides critical continuity and advisory support to the clinical leadership team. Overseeing the transition of governance initiatives, the Immediate Chief of Staff ensures that long-term clinical projects remain on schedule and aligned with the mission of the organization. Dotson facilitates the resolution of complex medical staff issues, drawing upon extensive experience to maintain harmony and operational focus across the tri-state Delta region. By mentoring junior medical leaders and supporting the implementation of new clinical policies, the Immediate Chief of Staff drives organizational stability. Wayne Dotson collaborates with the executive team to evaluate the impact of clinical decisions on patient care quality and hospital efficiency. This leadership role involves maintaining the integrity of the medical staff structure, ensuring that the network continues to provide high-quality medical services with the hometown hospitality expected by the community.

    Chrissy Nicholson - Chief Human Resources Officer

    Chrissy Nicholson, the Chief Human Resources Officer at Delta Health System, manages the strategic alignment of labor relations and organizational development to support the hospital network. Overseeing the implementation of performance management systems, the Chief Human Resources Officer ensures that all staff members contribute effectively to the mission of providing high-quality medical services. Nicholson drives initiatives to enhance employee engagement and wellness across the tri-state Delta region. By optimizing recruitment strategies and training programs, the Chief Human Resources Officer secures the talent necessary to maintain the standard of care at The Medical Center and other facilities. Chrissy Nicholson collaborates with the executive leadership team to address workforce challenges and promote a culture of professional growth. This leadership role involves managing complex labor compliance requirements and fostering an environment where staff feel empowered to deliver the hometown hospitality that defines the organization's reputation.

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

    Who leads Delta Health System?
    Delta Health System is led by Iris Stacker (Interim Chief Executive Officer), along with executives such as Tod Beasley (Chief Financial Officer) and Brett Zepponi (Chief of Staff).
    Who is part of Delta Health System’s executive team?
    The executive team of Delta Health System includes leaders such as Iris Stacker (Interim Chief Executive Officer), Tod Beasley (Chief Financial Officer), Brett Zepponi (Chief of Staff) and other senior executives.
    How many executives does Delta Health System have?
    Delta Health System has 8 executives leading key business areas.
    What roles are included in Delta Health System’s leadership team?
    The leadership team of Delta Health System includes roles such as Interim Chief Executive Officer, Chief Financial Officer, Chief of Staff, Chief Human Resources Officer, Vice Chief of Staff.