Natividad Hospital Executive and Leadership Team

October, 2026

Leadership Overview

Natividad Hospital has 4 executives leading key functions including information technology, medical oversight, clinical administration, and human resources.

Committed to delivering comprehensive health care services, Natividad Hospital maintains a mission of providing high-quality inpatient, outpatient, and trauma care to the California community through advanced diagnostic and specialty medical support.

Leadership Roles at Natividad Hospital

  • Chief Information Officer - Ari Entin
  • Chief Medical Officer - Peter Chandler
  • Muc - Chelsie Ballesteros
  • Chief People & Operations Officer - Janine Bouyea
  • Ari Entin - Chief Information Officer

    Ari Entin, the Chief Information Officer at Natividad Hospital, directs the digital infrastructure and health information systems essential for modern trauma center operations. Entin manages the integration of electronic health records and cybersecurity protocols to protect patient data across the California network. By architecting scalable cloud solutions, the Chief Information Officer ensures seamless communication between diagnostic departments and emergency care units. Ari Entin drives the implementation of advanced medical software, facilitating improved clinical workflows and data-driven decision-making for the entire hospital staff. This leadership role involves constant collaboration with the Board to align technological investments with long-term patient care goals. Through the modernization of internal systems, the Chief Information Officer optimizes operational efficiency, ultimately supporting the delivery of high-quality health care services while maintaining strict compliance with regional and national medical data standards.
    Ari Entin

    Peter Chandler - Chief Medical Officer

    Peter Chandler, the Chief Medical Officer at Natividad Hospital, oversees clinical standards and medical staff performance across all inpatient and outpatient departments. Chandler defines the protocols for trauma care and specialty health services, ensuring adherence to rigorous safety and quality benchmarks. By coordinating with department heads, the Chief Medical Officer maintains high levels of patient care excellence throughout the California facility. Peter Chandler drives initiatives to improve clinical outcomes and patient satisfaction scores through evidence-based medical practices. This leadership role requires constant interaction with the executive team to integrate medical strategy with broader hospital objectives. By fostering a culture of continuous improvement, the Chief Medical Officer supports the professional development of the medical staff. Chandler secures the integrity of medical operations, ensuring that every diagnostic and emergency service meets the complex needs of the diverse patient population served by the hospital.
    Peter Chandler

    Chelsie Ballesteros - Muc

    Chelsie Ballesteros, the Muc at Natividad Hospital, manages the administrative coordination of clinical support services and specialized patient care programs. Ballesteros directs the daily operations of the medical unit, ensuring that resources align with the trauma center's mission of providing accessible health care. By overseeing the logistical requirements of outpatient services, the Muc facilitates efficient patient throughput and resource allocation. Chelsie Ballesteros drives the implementation of operational policies that enhance the quality of diagnostic and specialty care delivery. This leadership role involves close cooperation with clinical directors to resolve bottlenecks and improve service delivery speed. Through the optimization of unit-level processes, the Muc supports the broader strategic goals of the hospital. Ballesteros ensures that all administrative functions remain focused on patient safety and operational excellence, contributing to the overall success of the medical facility within the California health care landscape.

    Janine Bouyea - Chief People & Operations Officer

    Janine Bouyea, the Chief People & Operations Officer at Natividad Hospital, directs human capital strategy and internal operational workflows to support the hospital's extensive health care mission. Bouyea manages talent acquisition, employee engagement, and organizational development to ensure a high-performing workforce across all medical departments. By overseeing the integration of administrative operations with clinical needs, the Chief People & Operations Officer maintains the structural integrity of the trauma center. Janine Bouyea drives initiatives to streamline internal processes, reducing overhead while maximizing the quality of patient-facing services. This leadership role involves constant collaboration with the C-suite to align workforce planning with the evolving demands of the California health care market. Through the implementation of robust operational frameworks, the Chief People & Operations Officer fosters a culture of excellence and accountability. Bouyea secures the long-term stability of the organization by prioritizing staff retention and operational efficiency.

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    Frequently Asked Questions Regarding Natividad Hospital Top Executives and Leadership Team

    Who leads Natividad Hospital?
    Natividad Hospital is led by Ari Entin (Chief Information Officer), along with executives such as Peter Chandler (Chief Medical Officer) and Chelsie Ballesteros (Muc).
    Who is part of Natividad Hospital’s executive team?
    The executive team of Natividad Hospital includes leaders such as Ari Entin (Chief Information Officer), Peter Chandler (Chief Medical Officer), Chelsie Ballesteros (Muc) and other senior executives.
    How many executives does Natividad Hospital have?
    Natividad Hospital has 4 executives leading key business areas.
    What roles are included in Natividad Hospital’s leadership team?
    The leadership team of Natividad Hospital includes roles such as Chief Information Officer, Chief Medical Officer, Muc, Chief People & Operations Officer.