Brewster Ambulance Service Executive and Leadership Team

May, 2026

Leadership Overview

Brewster Ambulance Service has 4 executives leading key functions including strategy, finance, operations, and administration.

Driven by a commitment to patient care, Brewster Ambulance Service upholds a legacy of trusted service since 1906, focusing on comfort, safety, and the utilization of cutting-edge technology in pre-hospital care across New England.

Leadership Roles at Brewster Ambulance Service

  • President & Chief Executive Officer - Mark Brewster
  • Chief Financial Officer - Paul Arena
  • President & Chief Operating Officer - Courtney Murphy
  • Chief Administrative Officer (CAO) - Jacqueline Kierstead
  • Mark Brewster - President & Chief Executive Officer

    Mark Brewster, the President & Chief Executive Officer at Brewster Ambulance Service, directs the overarching strategy and vision for the organization. This leadership role involves guiding the company's expansion across New England and ensuring alignment with its mission of providing trusted emergency and non-emergency medical transport. Mark Brewster oversees the integration of advanced technology in pre-hospital care and maintains the company's commitment to patient comfort and safety. The executive's focus extends to fostering a culture of professionalism among EMS professionals and ensuring operational excellence across all 28 transport hubs. This position requires strategic decision-making to navigate the evolving healthcare landscape and maintain Brewster Ambulance Service's reputation for reliability and quality.

    Paul Arena - Chief Financial Officer

    Paul Arena, the Chief Financial Officer at Brewster Ambulance Service, manages all financial operations and fiscal strategy for the organization. This executive directs the financial planning, budgeting, and reporting processes, ensuring the company's fiscal health and sustainability across its New England operations. Paul Arena oversees investment strategies, manages capital allocation for technology upgrades and fleet expansion, and ensures compliance with all financial regulations. The Chief Financial Officer's responsibilities include optimizing revenue cycles, managing costs associated with operating 28 transport hubs, and securing funding for future growth initiatives. Arena's financial acumen supports the company's mission of providing reliable and excellent patient care by ensuring robust financial management.

    Courtney Murphy - President & Chief Operating Officer

    Courtney Murphy, the President & Chief Operating Officer at Brewster Ambulance Service, directs daily operations and service delivery across Massachusetts, New Hampshire, Rhode Island, and Florida. This executive ensures the seamless execution of emergency and non-emergency medical transport, overseeing the efficiency and effectiveness of all 28 transport hubs. Courtney Murphy is responsible for optimizing logistical operations, managing fleet deployment, and maintaining the highest standards of patient care and safety. The Chief Operating Officer drives operational improvements, implements new technologies to enhance pre-hospital care, and ensures the professionalism of the EMS teams. Murphy's leadership guarantees the reliable and timely response to 911 calls and inter-facility transfers, reinforcing Brewster Ambulance Service's commitment to excellence.

    Jacqueline Kierstead - Chief Administrative Officer (CAO)

    Jacqueline Kierstead, the Chief Administrative Officer (CAO) at Brewster Ambulance Service, oversees critical administrative functions that support the company's extensive operations across New England. This executive manages human resources, legal affairs, compliance, and corporate governance, ensuring the smooth functioning of all support departments. Jacqueline Kierstead plays a vital role in developing and implementing policies that foster a professional environment for EMS professionals and support staff. The Chief Administrative Officer (CAO) ensures that Brewster Ambulance Service adheres to all regulatory requirements and maintains efficient administrative processes across its 28 transport hubs. Kierstead's strategic oversight contributes to the company's ability to deliver trusted and high-quality medical transport services.
    Jacqueline Kierstead

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    Frequently Asked Questions Regarding Brewster Ambulance Service Top Executives and Leadership Team

    Who leads Brewster Ambulance Service?
    Brewster Ambulance Service is led by Mark Brewster (President & Chief Executive Officer), along with executives such as Paul Arena (Chief Financial Officer) and Courtney Murphy (President & Chief Operating Officer).
    Who is part of Brewster Ambulance Service’s executive team?
    The executive team of Brewster Ambulance Service includes leaders such as Mark Brewster (President & Chief Executive Officer), Paul Arena (Chief Financial Officer), Courtney Murphy (President & Chief Operating Officer) and other senior executives.
    How many executives does Brewster Ambulance Service have?
    Brewster Ambulance Service has 4 executives leading key business areas.
    What roles are included in Brewster Ambulance Service’s leadership team?
    The leadership team of Brewster Ambulance Service includes roles such as President & Chief Executive Officer, Chief Financial Officer, President & Chief Operating Officer, Chief Administrative Officer (CAO).