Exeter Hospital Executive and Leadership Team

June, 2026

Leadership Overview

Exeter Hospital has 9 executives leading key functions including finance, operations, marketing, medical affairs, and administration.

Driven by a commitment to community well-being, Exeter Hospital provides comprehensive health services, focusing on specialized care areas to enhance patient outcomes and regional health.

Leadership Roles at Exeter Hospital

  • Chief Financial Officer - Allison Casassa
  • Chief Operating Officer - Sean O'Neil
  • President - Debra Cresta
  • President - Melanie Lanier
  • Associate Chief Marketing Officer - Apara Dave
  • Chief Medical Officer - James Glennon
  • Moc - Diana Doucette
  • Moc - Louise Field
  • Moc - Rydeen Karen
  • Allison Casassa - Chief Financial Officer

    Allison Casassa, the Chief Financial Officer at Exeter Hospital, directs all financial operations and strategic fiscal planning. Overseeing budgeting, financial reporting, and resource allocation, Casassa ensures the hospital's financial health and sustainability. This leadership role involves managing investments, optimizing revenue cycles, and maintaining compliance with healthcare financial regulations. By analyzing financial data, Allison Casassa drives informed decision-making across all departments, supporting the hospital's mission to deliver accessible and high-quality care. The Chief Financial Officer's oversight extends to capital expenditures and long-term financial strategy, securing the institution's capacity for growth and service expansion within New Hampshire.
    Allison Casassa

    Sean O'Neil - Chief Operating Officer

    Sean O'Neil, the Chief Operating Officer at Exeter Hospital, manages the day-to-day operational efficiency and service delivery. Overseeing hospital departments, O'Neil ensures seamless patient care pathways and optimal resource utilization across all facilities. This critical role involves implementing operational strategies that align with the hospital's commitment to comprehensive health services, including breast health, birthing, cardiovascular, occupational health, oncology, and orthopaedics. Sean O'Neil drives initiatives to enhance patient satisfaction and operational performance, ensuring adherence to the highest standards of healthcare delivery. The Chief Operating Officer's focus remains on streamlining processes and fostering a culture of continuous improvement within the Exeter Hospital network.

    Debra Cresta - President

    Debra Cresta, the President at Exeter Hospital, provides executive leadership and strategic vision for the entire organization. Cresta directs the hospital's overall mission, focusing on delivering comprehensive health care services and fostering community well-being. This leadership position involves overseeing all major initiatives, ensuring financial stability, and guiding the hospital's growth in specialized areas such as cardiovascular and occupational health. Debra Cresta champions a culture of excellence and patient advocacy. The President's role is crucial in maintaining Exeter Hospital's position as a leading healthcare provider in New Hampshire, driving innovation and service expansion.
    Debra Cresta

    Melanie Lanier - President

    Melanie Lanier, the President at Exeter Hospital, drives strategic initiatives and operational excellence across the institution. Lanier's leadership focuses on enhancing the delivery of comprehensive health services, including specialized care in birthing and reproductive medicine, oncology, and orthopaedics. This role involves guiding the hospital's commitment to patient-centered care and community health. Melanie Lanier works to ensure that Exeter Hospital remains at the forefront of medical innovation and service quality. The President's oversight is vital for the hospital's continued success and its ability to meet the diverse healthcare needs of the region.

    Apara Dave - Associate Chief Marketing Officer

    Apara Dave, the Associate Chief Marketing Officer at Exeter Hospital, spearheads strategic marketing initiatives and brand development. Dave oversees the promotion of comprehensive health services, including specialized programs in breast health, birthing and reproductive medicine, cardiovascular care, occupational and employee health, oncology, and orthopaedics. This position involves crafting marketing campaigns that resonate with the community and highlight the hospital's commitment to patient well-being. Apara Dave drives efforts to enhance patient engagement and expand the hospital's reach within New Hampshire. The Associate Chief Marketing Officer's work supports the hospital's growth by effectively communicating its value proposition and specialized service offerings to prospective patients and the wider region.

    James Glennon - Chief Medical Officer

    James Glennon, the Chief Medical Officer at Exeter Hospital, provides clinical leadership and ensures the highest standards of medical care. Glennon oversees all medical staff, directs clinical strategy, and champions quality improvement initiatives across the hospital's comprehensive service lines. This role is pivotal in maintaining the hospital's reputation for excellence in areas such as oncology, orthopaedics, and cardiovascular services. James Glennon works to integrate innovative medical practices and enhance patient safety protocols. The Chief Medical Officer's guidance is essential for aligning clinical operations with the hospital's mission to deliver exceptional healthcare to the Exeter community and surrounding regions.

    Diana Doucette - Moc

    Diana Doucette, the Moc at Exeter Hospital, contributes to the strategic direction of medical operations. Doucette's responsibilities involve supporting clinical leadership and ensuring the effective delivery of patient care services across various specialties. This role focuses on enhancing the quality and accessibility of healthcare offerings, including specialized programs in breast health and birthing services. Diana Doucette works to uphold the hospital's commitment to community health and patient well-being. The Moc's involvement supports the operational framework necessary for Exeter Hospital to provide comprehensive medical solutions to its patient base.

    Louise Field - Moc

    Louise Field, the Moc at Exeter Hospital, plays a key part in advancing the hospital's medical objectives. Field's contributions support the operational management of clinical services, ensuring that patient care aligns with the hospital's comprehensive health service offerings. This position involves collaborating with medical teams to enhance service delivery in areas like oncology and orthopaedics. Louise Field is dedicated to fostering an environment of medical excellence and patient-centered care. The Moc's efforts contribute to Exeter Hospital's capacity to meet the evolving healthcare needs of the New Hampshire region.

    Rydeen Karen - Moc

    Rydeen Karen, the Moc at Exeter Hospital, contributes to the oversight of medical services and clinical quality. Karen's responsibilities include supporting the implementation of best practices in patient care across all departments. This role emphasizes ensuring that the hospital's specialized services, such as those in breast health and occupational health, meet the highest standards. Rydeen Karen works to enhance the patient experience and clinical outcomes. The Moc's focus supports Exeter Hospital's dedication to providing accessible and effective healthcare solutions within its operational geography.

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    Frequently Asked Questions Regarding Exeter Hospital Top Executives and Leadership Team

    Who leads Exeter Hospital?
    Exeter Hospital is led by Allison Casassa (Chief Financial Officer), along with executives such as Sean O'Neil (Chief Operating Officer) and Debra Cresta (President).
    Who is part of Exeter Hospital’s executive team?
    The executive team of Exeter Hospital includes leaders such as Allison Casassa (Chief Financial Officer), Sean O'Neil (Chief Operating Officer), Debra Cresta (President) and other senior executives.
    How many executives does Exeter Hospital have?
    Exeter Hospital has 9 executives leading key business areas.
    What roles are included in Exeter Hospital’s leadership team?
    The leadership team of Exeter Hospital includes roles such as Chief Financial Officer, Chief Operating Officer, President, President, Associate Chief Marketing Officer.