Exeter Hospital Executive and Leadership Team

July, 2026

Leadership Overview

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

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 - Melanie Lanier
  • President - Debra Cresta
  • Associate Chief Marketing Officer - Apara Dave
  • Chief Medical Officer - Luke Brindamour
  • Moc - Rydeen Karen
  • Moc - Louise Field
  • Moc - Diana Doucette
  • 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 provide 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 and clinical operations, O'Neil ensures seamless patient care pathways and optimal resource utilization. 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, streamline workflows, and maintain the highest standards of healthcare delivery across Exeter Hospital's facilities. The Chief Operating Officer's focus remains on operational excellence and supporting the clinical teams in their pursuit of exceptional patient outcomes.

    Melanie Lanier - President

    Melanie Lanier, the President at Exeter Hospital, provides executive leadership and strategic direction for the entire organization. Lanier oversees all aspects of hospital operations, ensuring alignment with the mission to deliver comprehensive health services across New Hampshire. This leadership position involves guiding the hospital's growth, financial stability, and commitment to community well-being. Melanie Lanier works closely with the board and executive team to advance specialized care areas, including breast health, birthing, cardiovascular, oncology, and orthopaedics. The President's vision drives innovation and maintains Exeter Hospital's reputation for exceptional patient care and service excellence.

    Debra Cresta - President

    Debra Cresta, the President at Exeter Hospital, provides executive leadership and strategic direction for the organization. Cresta oversees all facets of hospital operations, ensuring alignment with the mission to deliver comprehensive health services across New Hampshire. This leadership role involves guiding the hospital's growth, financial stability, and commitment to community well-being. Debra Cresta collaborates with the board and executive team to advance specialized care areas, including breast health, birthing, cardiovascular, oncology, and orthopaedics. The President's vision drives innovation and maintains Exeter Hospital's reputation for exceptional patient care and service excellence.
    Debra Cresta

    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 targeted campaigns to enhance community engagement and patient outreach across New Hampshire. Apara Dave drives efforts to communicate the hospital's value proposition and expand its market presence. The Associate Chief Marketing Officer's responsibilities include digital marketing, public relations, and ensuring consistent brand messaging that reflects Exeter Hospital's dedication to patient well-being and advanced medical care.

    Luke Brindamour - Chief Medical Officer

    Luke Brindamour, the Chief Medical Officer at Exeter Hospital, provides clinical leadership and ensures the highest standards of medical practice. Brindamour oversees all medical staff, clinical quality initiatives, and patient safety programs, directly impacting the delivery of comprehensive health services. This role is pivotal in guiding the hospital's approach to specialized care areas such as oncology, orthopaedics, cardiovascular services, and occupational health. Luke Brindamour champions evidence-based medicine and fosters a culture of continuous improvement within the medical community. The Chief Medical Officer's strategic direction ensures that Exeter Hospital remains at the forefront of medical innovation and patient-centered care in the region.

    Rydeen Karen - Moc

    Rydeen Karen, the Moc at Exeter Hospital, contributes to the strategic oversight of medical operations. Karen's role involves supporting clinical leadership in ensuring the delivery of comprehensive health services. This position focuses on enhancing patient care protocols and fostering an environment of medical excellence. Rydeen Karen collaborates with other executives to advance the hospital's mission within its specialized service lines. The Moc's involvement supports the ongoing commitment to high-quality healthcare and patient satisfaction across Exeter Hospital's service area.

    Louise Field - Moc

    Louise Field, the Moc at Exeter Hospital, supports the strategic direction of medical affairs and clinical operations. Field's responsibilities include contributing to the enhancement of patient care standards and the effective delivery of comprehensive health services. This role involves collaborating with clinical teams to ensure adherence to best practices across all medical disciplines. Louise Field's efforts support Exeter Hospital's commitment to providing specialized care in areas such as oncology, orthopaedics, and cardiovascular health. The Moc's focus is on operational improvements that uphold the hospital's dedication to patient well-being and medical innovation.

    Diana Doucette - Moc

    Diana Doucette, the Moc at Exeter Hospital, contributes to the strategic management of medical services and clinical quality. Doucette oversees initiatives aimed at improving patient outcomes and ensuring the highest standards of care across specialized departments. This role involves collaborating with medical staff to implement innovative healthcare solutions and enhance service delivery. Diana Doucette's focus is on advancing Exeter Hospital's capabilities in areas like breast health, birthing, and occupational health. The Moc's leadership supports the hospital's ongoing mission to provide comprehensive, patient-centered healthcare to the community.

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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 Melanie Lanier (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), Melanie Lanier (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.