Leadership Overview
Advocate Aurora Health has 7 executives leading key functions including clinical strategy, regional medical oversight, organizational leadership, medical management, staff representation, and hospital administration.
Committed to advancing community wellness, Advocate Aurora Health delivers comprehensive healthcare services through a robust network of not-for-profit facilities, prioritizing patient outcomes and operational excellence across the Midwest.
Committed to advancing community wellness, Advocate Aurora Health delivers comprehensive healthcare services through a robust network of not-for-profit facilities, prioritizing patient outcomes and operational excellence across the Midwest.
Leadership Roles at Advocate Aurora Health
James Dan - President
James Dan, the President at Advocate Aurora Health, oversees the strategic direction and operational performance of the health system. Directing the executive team, the President ensures that all business units align with the core mission of providing high-quality, not-for-profit healthcare. This leadership role involves managing large-scale organizational growth and fostering partnerships that expand the reach of the system. By optimizing administrative processes, James Dan improves operational efficiency and financial stability across the network. The President also engages with stakeholders to promote community health initiatives and long-term sustainability. Through the implementation of innovative management strategies, Dan drives the organization toward achieving its primary goals of patient-centered care and operational excellence. As the President, Dan maintains a focus on scaling services to meet the evolving demands of the healthcare industry while upholding the values of the institution.
Gregory Sehring - President, Medical Management Committee
Gregory Sehring, the President, Medical Management Committee at Advocate Aurora Health, leads the oversight of medical governance and clinical policy development. Coordinating the activities of the committee, the President, Medical Management Committee ensures that clinical decision-making processes remain transparent and effective. This role involves reviewing medical staff bylaws and establishing protocols that govern professional conduct and clinical standards. By facilitating communication between the medical staff and executive leadership, Gregory Sehring promotes a collaborative environment that supports high-quality patient care. The President, Medical Management Committee also addresses complex clinical challenges, providing guidance on ethical considerations and resource management. Through the rigorous application of medical management principles, Sehring ensures that the health system maintains its commitment to excellence. This leadership function directly impacts the quality of care by fostering a culture of accountability and professional development among the medical staff.
Alyssa Kaleta - President, Elect of Medical Staff
Alyssa Kaleta, the President, Elect of Medical Staff at Advocate Aurora Health, represents the interests of the medical staff while preparing for future leadership transitions within the clinical organization. Overseeing communication between physicians and hospital administration, the President, Elect of Medical Staff ensures that clinical perspectives inform strategic decision-making. This role involves advocating for resources that support physician well-being and professional growth, which in turn enhances patient care quality. By participating in key committees, Alyssa Kaleta contributes to the development of policies that improve clinical workflows and operational efficiency. The President, Elect of Medical Staff also fosters a collaborative culture, encouraging interdisciplinary teamwork across the health system. Through active engagement with the medical community, Kaleta strengthens the alignment between staff needs and organizational objectives, ensuring that the health system remains a preferred destination for top-tier medical professionals.
Edward Harding - President
Edward Harding, the President at Advocate Aurora Health, focuses on the operational scaling and service expansion of the health system. Directing the implementation of strategic initiatives, the President ensures that hospital facilities maintain high standards of service delivery and patient satisfaction. This leadership role involves managing capital investments and infrastructure projects that support the long-term growth of the organization. By optimizing the patient experience, Edward Harding drives improvements in service quality and operational throughput. The President also collaborates with other executive leaders to integrate new technologies and care models that enhance the overall health system performance. Through the effective management of resources and personnel, Harding ensures that the organization remains a leader in the healthcare sector. As the President, Harding maintains a commitment to operational excellence, ensuring that the health system continues to serve the community effectively.
Ania Horner - President, Medical Center Burlington & Medical Center (Aurora, Aurora, Lakeland)
Ania Horner, the President, Medical Center Burlington & Medical Center (Aurora, Aurora, Lakeland) at Advocate Aurora Health, manages the daily operations and strategic growth of multiple medical centers. Overseeing facility-specific performance, the President, Medical Center Burlington & Medical Center (Aurora, Aurora, Lakeland) ensures that each location delivers high-quality care while meeting financial and operational targets. This role involves coordinating with local department heads to streamline clinical workflows and improve patient access to services. By fostering a culture of excellence at the facility level, Ania Horner drives improvements in patient outcomes and staff engagement. The President, Medical Center Burlington & Medical Center (Aurora, Aurora, Lakeland) also engages with the local community to address specific health needs and promote the services of the health system. Through rigorous oversight of facility operations, Horner ensures that each center contributes to the overall success and mission of the organization.
Tedmond O'Reilly - Chief Medical Officer
Tedmond O'Reilly, the Chief Medical Officer at Advocate Aurora Health, directs clinical quality standards and patient safety protocols across the entire health system. Overseeing the integration of evidence-based practices, the Chief Medical Officer ensures that all medical departments maintain high performance metrics. This leadership role involves collaborating with the Board to align clinical initiatives with the broader mission of providing accessible, high-quality care. By standardizing treatment pathways, Tedmond O'Reilly optimizes resource allocation and improves health outcomes for diverse patient populations. The Chief Medical Officer also monitors regulatory compliance and advances digital health integration to modernize care delivery. Through rigorous oversight of clinical governance, O'Reilly maintains the integrity of the health system, ensuring that every facility adheres to the highest standards of medical excellence while supporting the long-term sustainability of the organization.
Katherine Mansalis - Division Chief Medical Officer, Wisconsin
Katherine Mansalis, the Division Chief Medical Officer, Wisconsin at Advocate Aurora Health, manages clinical operations and physician alignment throughout the Wisconsin market. Overseeing regional medical staff, the Division Chief Medical Officer, Wisconsin ensures that local facilities meet system-wide quality benchmarks while addressing specific community health needs. This role involves coordinating with hospital leadership to implement strategic clinical programs that enhance patient access and care continuity. By fostering a culture of continuous improvement, Katherine Mansalis drives physician engagement and operational efficiency across the division. The Division Chief Medical Officer, Wisconsin also evaluates regional health trends to adapt service offerings, ensuring that the health system remains responsive to local demographic shifts. Through consistent monitoring of clinical performance, Mansalis secures high-quality care delivery, strengthening the market position of the organization within the competitive healthcare landscape of the region.
Explore Leadership Teams in Hospitals & Physicians Clinics
Valley Health, founded in 1903 and headquartered in Winchester, Virginia, is a not-for-profit health system of hospitals, urgent care, physician practices, and services dedicated to meeting the medical needs of West Virginia, Maryland, and the Top of Virginia.
Company Leadership MN
DA

Conway Medical Center is a full service hospital and medical center serving Conway, SC and Myrtle Beach, SC.
Company Leadership HD
CA
AW
Midland Health, headquartered in Midland, Texas, is a healthcare system that offers a variety of different health-related services for surgical, cancer, and family care.
Company Leadership
IM
Methodist Health System is a healthcare company that provides health services such as surgical, rehab, and nursing care services. They are headquartered in Omaha, Nebraska.
Company Leadership JF

