OSF HealthCare Executive and Leadership Team

July, 2026

Leadership Overview

OSF HealthCare has 10 executives leading key functions including marketing, finance, medical operations, and hospital administration.

Driven by a mission of compassionate care, OSF HealthCare operates a non-profit Catholic health care system across Illinois and Michigan, focusing on integrated medical services and community well-being.

Leadership Roles at OSF HealthCare

  • Chief Financial Officer - Harbaugh Ken
  • President - Jennifer Junis
  • President, Osf Healthcare Saint Francis Medical Center - Michael Wells
  • President - Jacqueline Kernan
  • President, OSF HealthCare St. Mary Medical Center in Galesburg and OSF HealthCare Holy Family Medical Center in Monmouth - Zachary Yoder
  • Chief Marketing Officer - Tim Miller
  • Osf Smmc, Osf Hfmc, Osf Slmc Vice President & Chief Marketing Officer - Mark Meeker
  • Chief Medical Officer - Robert Sparrow
  • Vice President, Ambulatory Chief Medical Officer, Multispecialty Services - Timothy Vega
  • Vice President Chief Medical Officer St. Joseph Medical Center - Sarah Zallek
  • Harbaugh Ken - Chief Financial Officer

    Harbaugh Ken, the Chief Financial Officer at OSF HealthCare, manages all financial operations and fiscal planning. Directing the finance division, Ken ensures the fiscal health and sustainability of the non-profit Catholic health care organization, overseeing budgeting, financial reporting, and investment strategies. This critical role involves maintaining financial compliance and optimizing resource allocation across the hospital system and its various health care facilities throughout Illinois and Michigan. By implementing robust financial controls and driving cost-efficiency measures, Harbaugh Ken directly supports the organization's ability to deliver high-quality patient care. Ultimately, Ken safeguards the financial integrity of OSF HealthCare, enabling continued service to the communities it serves.

    Jennifer Junis - President

    Jennifer Junis, the President at OSF HealthCare, directs overall strategic operations and organizational development. Leading the executive team, Junis ensures the effective implementation of the health system's mission and vision across its extensive network of hospitals and facilities throughout Illinois and Michigan. This high-level position involves fostering collaboration among various departments, driving innovation in patient care delivery, and maintaining strong relationships with stakeholders. By guiding strategic initiatives and operational efficiencies, Jennifer Junis directly impacts the growth and sustainability of OSF HealthCare. Ultimately, Junis champions the organization's commitment to providing compassionate and high-quality health services to the communities served.

    Michael Wells - President, Osf Healthcare Saint Francis Medical Center

    Michael Wells, the President, Osf Healthcare Saint Francis Medical Center at OSF HealthCare, leads the strategic direction and operational management of this key medical center. Directing all functions at Saint Francis Medical Center, Wells ensures the delivery of high-quality patient care and efficient service operations within the Peoria, Illinois region. This leadership role involves overseeing departmental performance, fostering a positive work environment for staff, and enhancing community engagement for the facility. By implementing innovative healthcare solutions and optimizing resource utilization, Michael Wells directly contributes to the center's mission of providing compassionate care. Ultimately, Wells drives the success and patient satisfaction at Osf Healthcare Saint Francis Medical Center.
    Michael Wells

    Jacqueline Kernan - President

    Jacqueline Kernan, the President at OSF HealthCare, drives strategic initiatives and operational excellence across the health system. Leading key organizational functions, Kernan ensures the alignment of all facilities with OSF HealthCare's core mission of providing compassionate care throughout Illinois and Michigan. This executive position involves fostering interdepartmental collaboration, championing advancements in healthcare services, and overseeing the strategic growth of the organization. By guiding critical decision-making processes and resource management, Jacqueline Kernan directly enhances the system's capacity to serve its communities effectively. Ultimately, Kernan strengthens OSF HealthCare's position as a leading provider of integrated health services.

    Zachary Yoder - President, OSF HealthCare St. Mary Medical Center in Galesburg and OSF HealthCare Holy Family Medical Center in Monmouth

    Zachary Yoder, the President, OSF HealthCare St. Mary Medical Center in Galesburg and OSF HealthCare Holy Family Medical Center in Monmouth, directs the operational leadership for these two vital medical centers. Overseeing both St. Mary Medical Center and Holy Family Medical Center, Yoder ensures the delivery of high-quality, patient-centered care within their respective communities in Illinois. This role involves managing facility operations, enhancing local service offerings, and fostering strong community relationships. By implementing strategic improvements and optimizing resource allocation, Zachary Yoder directly supports the mission of OSF HealthCare in these regions. Ultimately, Yoder drives operational efficiency and patient satisfaction at both medical centers.
    Zachary Yoder

    Tim Miller - Chief Marketing Officer

    Tim Miller, the Chief Marketing Officer at OSF HealthCare, directs all brand strategy and public relations initiatives. Overseeing the marketing department, Miller ensures consistent messaging across all communication channels, aligning with the organization's mission of providing compassionate care. This leadership role involves developing and executing comprehensive marketing plans to enhance community engagement and patient outreach throughout Illinois and Michigan. By optimizing digital presence and traditional media campaigns, Tim Miller directly supports the growth and visibility of OSF HealthCare's medical group and hospital system. Ultimately, Miller drives brand recognition and patient acquisition through strategic market positioning.

    Mark Meeker - Osf Smmc, Osf Hfmc, Osf Slmc Vice President & Chief Marketing Officer

    Mark Meeker, the Osf Smmc, Osf Hfmc, Osf Slmc Vice President & Chief Marketing Officer at OSF HealthCare, leads targeted marketing efforts for specific medical centers. Directing marketing strategies for Osf Smmc, Osf Hfmc, and Osf Slmc, Meeker ensures localized brand presence and patient engagement initiatives are effectively implemented. This role focuses on enhancing the visibility and service offerings of these key facilities within their respective communities across Illinois. By coordinating promotional activities and patient outreach programs, Mark Meeker directly contributes to the operational success and community connection of these OSF HealthCare locations. Ultimately, Meeker drives patient volume and strengthens the reputation of these vital health care centers.

    Robert Sparrow - Chief Medical Officer

    Robert Sparrow, the Chief Medical Officer at OSF HealthCare, oversees all clinical operations and medical quality standards. Directing the medical staff and clinical departments, Sparrow ensures the delivery of exceptional patient care and adherence to the highest standards of medical practice throughout the organization's facilities in Illinois and Michigan. This pivotal role involves setting clinical strategy, implementing best practices, and fostering a culture of continuous improvement in patient outcomes. By collaborating with hospital leadership and medical teams, Robert Sparrow directly enhances the quality and safety of care provided. Ultimately, Sparrow champions clinical excellence and patient well-being across the OSF HealthCare system.

    Timothy Vega - Vice President, Ambulatory Chief Medical Officer, Multispecialty Services

    Timothy Vega, the Vice President, Ambulatory Chief Medical Officer, Multispecialty Services at OSF HealthCare, leads clinical strategy for outpatient and specialized care. Directing medical operations across various multispecialty services, Vega ensures the highest standards of patient care and clinical excellence in ambulatory settings throughout Illinois and Michigan. This position involves developing and implementing clinical protocols, enhancing patient access to specialized services, and fostering collaboration among diverse medical teams. By focusing on integrated care models and patient experience, Timothy Vega directly improves the effectiveness and efficiency of outpatient services. Ultimately, Vega champions clinical innovation and patient well-being in the ambulatory care network.

    Sarah Zallek - Vice President Chief Medical Officer St. Joseph Medical Center

    Sarah Zallek, the Vice President Chief Medical Officer St. Joseph Medical Center at OSF HealthCare, directs clinical quality and patient safety initiatives for the medical center. Overseeing medical staff and clinical departments at St. Joseph Medical Center, Zallek ensures adherence to best practices and the delivery of exceptional patient care within the Peoria, Illinois area. This leadership role involves developing and implementing clinical strategies, managing physician relations, and driving continuous improvement in healthcare outcomes. By championing evidence-based medicine and patient-centered care, Sarah Zallek directly enhances the quality and safety of services provided. Ultimately, Zallek strengthens the medical center's commitment to compassionate and effective healthcare delivery.

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    Frequently Asked Questions Regarding OSF HealthCare Top Executives and Leadership Team

    Who leads OSF HealthCare?
    OSF HealthCare is led by Harbaugh Ken (Chief Financial Officer), along with executives such as Jennifer Junis (President) and Michael Wells (President, Osf Healthcare Saint Francis Medical Center).
    Who is part of OSF HealthCare’s executive team?
    The executive team of OSF HealthCare includes leaders such as Harbaugh Ken (Chief Financial Officer), Jennifer Junis (President), Michael Wells (President, Osf Healthcare Saint Francis Medical Center) and other senior executives.
    How many executives does OSF HealthCare have?
    OSF HealthCare has 10 executives leading key business areas.
    What roles are included in OSF HealthCare’s leadership team?
    The leadership team of OSF HealthCare includes roles such as Chief Financial Officer, President, President, Osf Healthcare Saint Francis Medical Center, President, President, OSF HealthCare St. Mary Medical Center in Galesburg and OSF HealthCare Holy Family Medical Center in Monmouth.