Doctors Hospital at Renaissance Health System Executive and Leadership Team

October, 2026

Leadership Overview

Doctors Hospital at Renaissance Health System has 6 executives leading key functions including information technology, revenue cycle management, clinical operations, administrative strategy, financial planning, and medical governance.

Committed to providing high-quality care to over 1.2 million residents, Doctors Hospital at Renaissance Health System advances medical excellence through physician-led innovation and comprehensive acute care services across South Texas.

Leadership Roles at Doctors Hospital at Renaissance Health System

  • Chief Financial Officer, System - Patrick Mathews
  • Chief Operating Officer - Marissa Castaneda
  • Chief Operating Officer & Executive Vice President - Aida Coronado- Garcia
  • Chief Information Officer - Skip Courtney
  • Chief Revenue Officer - Alfonso Gonzalez
  • Chief Medical Officer - Saroja Viswamitra
  • Patrick Mathews - Chief Financial Officer, System

    Patrick Mathews, the Chief Financial Officer, System at Doctors Hospital at Renaissance Health System, manages the overarching fiscal strategy and capital allocation for the entire organization. Mathews oversees financial reporting, investment planning, and risk management to ensure the long-term sustainability of this large physician-owned facility. By directing budgetary oversight, the Chief Financial Officer, System maintains the financial health required to support 506 beds and extensive medical services. This leadership role involves working closely with the executive team to evaluate the economic impact of new clinical programs and infrastructure projects. Patrick Mathews implements rigorous financial controls to optimize resource utilization across the South Texas network. Through the analysis of market trends and cost-efficiency metrics, the Chief Financial Officer, System drives fiscal growth and supports the hospital's mission. Ultimately, Mathews secures the capital resources necessary for delivering advanced healthcare to the regional population.

    Marissa Castaneda - Chief Operating Officer

    Marissa Castaneda, the Chief Operating Officer at Doctors Hospital at Renaissance Health System, directs the daily internal operations and facility management of this 506-bed hospital. Castaneda focuses on optimizing patient flow, staffing logistics, and supply chain management to ensure high-quality care delivery. By refining internal processes, the Chief Operating Officer enhances the efficiency of acute care services across the South Texas region. This leadership role involves coordinating with department heads to maintain rigorous safety standards and operational excellence. Marissa Castaneda monitors performance metrics to identify areas for improvement in hospital throughput and resource allocation. Through the implementation of lean management principles, the Chief Operating Officer drives organizational productivity and supports the physician-owned business model. Ultimately, Castaneda secures the operational framework necessary to meet the complex healthcare needs of the local community.

    Aida Coronado- Garcia - Chief Operating Officer & Executive Vice President

    Aida Coronado- Garcia, the Chief Operating Officer & Executive Vice President at Doctors Hospital at Renaissance Health System, architects the strategic expansion of clinical services and administrative programs. Coronado- Garcia oversees long-term growth initiatives and cross-departmental collaboration to strengthen the hospital's market position in South Texas. By aligning executive strategy with patient care goals, the Chief Operating Officer & Executive Vice President ensures the facility remains a leader in physician-owned healthcare. This leadership role involves managing high-level partnerships and board relations to support the mission of the organization. Aida Coronado- Garcia drives initiatives that improve service delivery and patient satisfaction across the 506-bed system. Through the execution of comprehensive development plans, the Chief Operating Officer & Executive Vice President fosters a culture of excellence and innovation. Ultimately, Coronado- Garcia secures the long-term viability and reputation of the hospital within the competitive healthcare landscape.

    Skip Courtney - Chief Information Officer

    Skip Courtney, the Chief Information Officer at Doctors Hospital at Renaissance Health System, directs the digital infrastructure supporting this 506-bed acute care facility. Courtney manages the integration of electronic health records and cybersecurity protocols to protect patient data across the South Texas network. By architecting scalable cloud solutions, the Chief Information Officer ensures seamless communication between clinical departments and administrative units. This leadership role involves optimizing data analytics to improve patient outcomes and operational efficiency. Skip Courtney maintains alignment with the board regarding technological investments that support the hospital's mission as a physician-owned entity. Through the implementation of advanced diagnostic software, the Chief Information Officer drives digital transformation, ensuring that medical staff access critical information instantly. Ultimately, Courtney secures the technological foundation necessary for delivering high-quality healthcare to the regional population.

    Alfonso Gonzalez - Chief Revenue Officer

    Alfonso Gonzalez, the Chief Revenue Officer at Doctors Hospital at Renaissance Health System, manages the financial intake processes for this large physician-owned facility. Gonzalez oversees billing cycles, insurance negotiations, and reimbursement strategies to ensure the fiscal health of the organization. By streamlining revenue collection, the Chief Revenue Officer supports the continued expansion of acute care services for the 1.2 million residents served. This leadership role involves collaborating with the finance department to forecast growth and maintain budgetary discipline. Alfonso Gonzalez implements rigorous auditing standards to maximize operational efficiency and reduce administrative overhead. Through the development of robust financial models, the Chief Revenue Officer drives sustainable revenue streams that allow for ongoing investment in medical technology. Ultimately, Gonzalez secures the financial stability required to maintain the hospital's status as a premier healthcare provider in South Texas.

    Saroja Viswamitra - Chief Medical Officer

    Saroja Viswamitra, the Chief Medical Officer at Doctors Hospital at Renaissance Health System, directs the clinical governance and medical standards for the entire hospital. Viswamitra oversees physician performance, quality of care initiatives, and patient safety protocols to ensure excellence in medical outcomes. By leading the medical staff, the Chief Medical Officer fosters a collaborative environment that supports the physician-owned model of the facility. This leadership role involves establishing evidence-based clinical practices and monitoring compliance with healthcare regulations. Saroja Viswamitra coordinates with department heads to integrate new medical technologies and treatment modalities into daily practice. Through the promotion of continuous professional development, the Chief Medical Officer drives high standards of care for the 1.2 million residents served. Ultimately, Viswamitra secures the clinical integrity and reputation of the hospital as a premier provider of acute care services in South Texas.

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    Frequently Asked Questions Regarding Doctors Hospital at Renaissance Health System Top Executives and Leadership Team

    Who leads Doctors Hospital at Renaissance Health System?
    Doctors Hospital at Renaissance Health System is led by Patrick Mathews (Chief Financial Officer, System), along with executives such as Marissa Castaneda (Chief Operating Officer) and Aida Coronado- Garcia (Chief Operating Officer & Executive Vice President).
    Who is part of Doctors Hospital at Renaissance Health System’s executive team?
    The executive team of Doctors Hospital at Renaissance Health System includes leaders such as Patrick Mathews (Chief Financial Officer, System), Marissa Castaneda (Chief Operating Officer), Aida Coronado- Garcia (Chief Operating Officer & Executive Vice President) and other senior executives.
    How many executives does Doctors Hospital at Renaissance Health System have?
    Doctors Hospital at Renaissance Health System has 6 executives leading key business areas.
    What roles are included in Doctors Hospital at Renaissance Health System’s leadership team?
    The leadership team of Doctors Hospital at Renaissance Health System includes roles such as Chief Financial Officer, System, Chief Operating Officer, Chief Operating Officer & Executive Vice President, Chief Information Officer, Chief Revenue Officer.