Mercy Executive and Leadership Team

June, 2026

Leadership Overview

Mercy has 10 executives leading key functions including strategy, operations, and medical affairs.

Driven by a commitment to compassionate care, Mercy is dedicated to providing comprehensive health and human services across multiple states, impacting community well-being through its integrated network of hospitals, clinics, and health plans.

Leadership Roles at Mercy

  • President & Chief Executive Officer - Steve Mackin
  • President & Chief Executive Officer - Daryle Voss
  • Corporate, Foundation Vice President & Chief Financial Officer - Mandy Loop
  • Vice President, Operations & Chief Operating Officer - Michael Herr
  • Executive VP & Chief Operating Officer - John Mohart
  • Executive Assistant To the Chief Human Resources Officer and Foundation President - Crystal Milde
  • President, Southeast Communities - Amanda Shelast
  • President, Medical Staff - Jamie Harrison
  • Chief of Staff - David Gooden
  • Chief Medical Officer - Karthik Iyer
  • Steve Mackin - President & Chief Executive Officer

    Steve Mackin, the President & Chief Executive Officer at Mercy, directs the overarching strategy and operational execution for the integrated health system. Mackin guides the organization's mission to provide comprehensive care, encompassing hospitals, physician practices, outpatient clinics, and health plans across several states. Overseeing the strategic direction, Mackin ensures alignment with Mercy's founding principles and its commitment to community well-being. This leadership role involves fostering innovation in healthcare delivery and managing the complex network of services, from acute care hospitals to home health programs. By driving operational excellence, Steve Mackin ensures the efficient and effective delivery of high-quality healthcare services, solidifying Mercy's position as a leading provider in the region. The focus remains on enhancing patient outcomes and expanding access to care through strategic initiatives and robust management of all organizational facets.
    Steve Mackin

    Daryle Voss - President & Chief Executive Officer

    Daryle Voss, the President & Chief Executive Officer at Mercy, directs the strategic vision and operational leadership for specific community-focused initiatives within the health system. Voss oversees the comprehensive delivery of healthcare services, including hospitals, physician practices, and outpatient clinics, ensuring alignment with Mercy's core mission and values. This leadership role involves driving growth, enhancing patient care quality, and fostering strong community relationships across the regions served. By focusing on strategic development and operational effectiveness, Daryle Voss ensures that Mercy's services meet the unique needs of the populations within its purview. The impact of Voss's leadership is evident in the sustained delivery of compassionate care and the expansion of health and human services, reinforcing Mercy's commitment to community well-being.
    Daryle Voss

    Mandy Loop - Corporate, Foundation Vice President & Chief Financial Officer

    Mandy Loop, the Corporate, Foundation Vice President & Chief Financial Officer at Mercy, oversees the financial health and strategic fiscal management of the entire health system and its associated foundation. Loop directs all financial operations, including budgeting, financial planning, accounting, and investment management, ensuring fiscal responsibility and sustainability across Mercy's diverse entities. This critical role involves managing financial resources to support patient care initiatives, operational expansions, and philanthropic goals. By providing strategic financial guidance, Mandy Loop enables informed decision-making that underpins Mercy's ability to deliver comprehensive health and human services. The focus is on optimizing financial performance, ensuring compliance, and driving long-term financial stability for the organization and its foundation.

    Michael Herr - Vice President, Operations & Chief Operating Officer

    Michael Herr, the Vice President, Operations & Chief Operating Officer at Mercy, directs the operational efficiency and service delivery across the health system's extensive network. Herr oversees the day-to-day management of hospitals, physician practices, outpatient clinics, and ancillary services, ensuring high standards of patient care and operational performance. This leadership position involves optimizing resource allocation, implementing best practices in healthcare management, and driving continuous improvement initiatives throughout the organization. By focusing on operational excellence, Michael Herr ensures that Mercy's facilities and services function cohesively to meet the healthcare needs of the communities served. The scope of responsibility includes managing the complex logistical and administrative functions that support Mercy's mission of providing compassionate and comprehensive care, thereby enhancing patient experiences and organizational effectiveness.
    Michael Herr

    John Mohart - Executive VP & Chief Operating Officer

    John Mohart, the Executive VP & Chief Operating Officer at Mercy, spearheads the strategic operational development and execution across the health system's diverse service lines. Mohart drives initiatives aimed at enhancing the efficiency and effectiveness of Mercy's hospital operations, physician practices, and outpatient facilities, ensuring seamless integration of care delivery. This executive role involves overseeing critical operational functions, including resource management, process optimization, and the implementation of innovative healthcare solutions to meet evolving patient needs. By focusing on operational excellence, John Mohart ensures that Mercy consistently delivers high-quality, compassionate care across its extensive network. The leadership impact extends to fostering a culture of continuous improvement and strategic growth, supporting Mercy's mission to provide comprehensive health and human services throughout its service areas.
    John Mohart

    Crystal Milde - Executive Assistant To the Chief Human Resources Officer and Foundation President

    Crystal Milde, the Executive Assistant To the Chief Human Resources Officer and Foundation President at Mercy, provides essential administrative and logistical support to key executive functions. Milde manages complex scheduling, coordinates critical meetings, and facilitates communication between the Chief Human Resources Officer, the Foundation President, and other stakeholders. This role is pivotal in ensuring the smooth operation of executive offices, supporting strategic human resources initiatives and philanthropic endeavors. By maintaining organized records and managing correspondence, Crystal Milde enhances the efficiency of leadership teams focused on employee well-being and organizational development. The support provided is crucial for advancing Mercy's mission through effective human capital management and robust foundation activities, contributing to the overall success of the health system.

    Amanda Shelast - President, Southeast Communities

    Amanda Shelast, the President, Southeast Communities at Mercy, directs the strategic operations and community engagement for Mercy's presence in the southeastern regions. Shelast oversees the integrated delivery of healthcare services, including hospitals, physician practices, and outpatient clinics, ensuring alignment with local community needs and Mercy's overarching mission. This leadership role involves driving operational performance, fostering strong relationships with healthcare providers and community stakeholders, and enhancing patient access to quality care. By focusing on regional growth and service excellence, Amanda Shelast ensures that Mercy effectively serves the populations within its southeastern territories. The impact of Shelast's leadership is crucial for advancing Mercy's commitment to providing compassionate and comprehensive health and human services throughout these vital communities.
    Amanda Shelast

    Jamie Harrison - President, Medical Staff

    Jamie Harrison, the President, Medical Staff at Mercy, provides leadership and advocacy for the physician community across the health system, ensuring collaborative engagement and high standards of medical practice. Harrison facilitates communication and alignment between the medical staff and hospital administration, championing initiatives that enhance patient care quality and operational efficiency. This role is critical in fostering a cohesive environment where physicians can effectively deliver services and contribute to strategic decision-making. By representing the interests of the medical staff, Jamie Harrison plays a key part in advancing Mercy's commitment to clinical excellence and compassionate care. The focus remains on supporting physicians and ensuring their vital contributions to the health system's mission are recognized and integrated into overall operations.

    David Gooden - Chief of Staff

    David Gooden, the Chief of Staff at Mercy, provides critical support and strategic counsel to executive leadership, ensuring efficient operations and effective communication across the organization. Gooden facilitates the execution of key initiatives by streamlining processes and managing critical projects that span Mercy's diverse healthcare services. This role involves coordinating efforts between various departments, including hospital administration, physician practices, and health plan management, to ensure seamless integration and operational synergy. By acting as a central point of contact for high-priority matters, David Gooden enhances the effectiveness of executive decision-making and drives progress on strategic objectives. The focus is on optimizing internal workflows and supporting the President & Chief Executive Officer in achieving organizational goals, thereby contributing to the delivery of comprehensive care and human services across Mercy's extensive network.

    Karthik Iyer - Chief Medical Officer

    Karthik Iyer, the Chief Medical Officer at Mercy, leads clinical strategy and ensures the highest standards of medical care across the health system's extensive network of hospitals and clinics. Iyer champions clinical excellence, patient safety, and quality improvement initiatives, guiding physician practices and medical staff in delivering evidence-based care. This executive position involves collaborating with operational leaders to integrate clinical best practices with efficient service delivery, ensuring a cohesive patient experience. By focusing on medical quality and innovation, Karthik Iyer plays a vital role in advancing Mercy's mission to provide compassionate and comprehensive healthcare. The leadership impact extends to fostering a culture of continuous learning and clinical advancement among healthcare professionals throughout the organization.

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    Frequently Asked Questions Regarding Mercy Top Executives and Leadership Team

    Who leads Mercy?
    Mercy is led by Steve Mackin (President & Chief Executive Officer), along with executives such as Daryle Voss (President & Chief Executive Officer) and Mandy Loop (Corporate, Foundation Vice President & Chief Financial Officer).
    Who is part of Mercy’s executive team?
    The executive team of Mercy includes leaders such as Steve Mackin (President & Chief Executive Officer), Daryle Voss (President & Chief Executive Officer), Mandy Loop (Corporate, Foundation Vice President & Chief Financial Officer) and other senior executives.
    How many executives does Mercy have?
    Mercy has 10 executives leading key business areas.
    What roles are included in Mercy’s leadership team?
    The leadership team of Mercy includes roles such as President & Chief Executive Officer, President & Chief Executive Officer, Corporate, Foundation Vice President & Chief Financial Officer, Vice President, Operations & Chief Operating Officer, Executive VP & Chief Operating Officer.