MMT Executive and Leadership Team

August, 2026

Leadership Overview

MMT has 6 executives leading key functions including financial strategy, operational excellence, corporate leadership, and specialized medical device manufacturing divisions.

Focused on revolutionizing medical device production through advanced manufacturing-as-a-service, MMT delivers comprehensive technical solutions and aftermarket support to global healthcare markets.

Leadership Roles at MMT

  • Chief Financial Officer - Amber Fields
  • Chief Operating Officer - Rick Stetler
  • President - Adam Chen
  • Division President, Catheter Technologies - Trent Steckler
  • President & Owner - Vivian Stevens-Lyons
  • Division President, Guidewire & Abrasive Technologies - Jesse Metcalf
  • Amber Fields - Chief Financial Officer

    Amber Fields, the Chief Financial Officer at MMT, directs all fiscal planning and capital allocation strategies to support the company's medical manufacturing-as-a-service model. Fields manages the financial health of the organization by overseeing budgeting, forecasting, and long-term investment in technical solutions. By aligning fiscal resources with the strategic goals of the executive team, the Chief Financial Officer ensures sustainable growth across North American operations. Amber Fields maintains rigorous oversight of financial reporting and compliance, providing the necessary data for informed decision-making at the board level. This leadership role involves optimizing cost structures to enhance the value proposition of the company's manufacturing services. Through disciplined financial management, the Chief Financial Officer secures the capital required for ongoing innovation in medical device production, ultimately driving the overall profitability and market competitiveness of the firm.
    Amber Fields

    Rick Stetler - Chief Operating Officer

    Rick Stetler, the Chief Operating Officer at MMT, directs the daily execution of manufacturing-as-a-service operations to ensure high-quality output for medical device clients. Stetler oversees the integration of technical solutions and aftermarket support, streamlining workflows to maximize efficiency across all production facilities. By coordinating with other C-suite leaders, the Chief Operating Officer maintains operational alignment with the broader corporate mission. Rick Stetler manages the scaling of manufacturing capabilities to meet the evolving demands of the global medical device industry. This role involves implementing advanced process improvements that reduce lead times and enhance product reliability. Through the active management of supply chain logistics and internal production standards, the Chief Operating Officer drives operational excellence. Stetler ensures that the company's manufacturing infrastructure remains at the forefront of industry standards, supporting the delivery of high-precision medical components.

    Adam Chen - President

    Adam Chen, the President at MMT, directs the overarching corporate strategy and market expansion initiatives for the organization. Chen oversees the alignment of applications expertise with the company's core manufacturing-as-a-service offerings to maintain a competitive edge in the medical device sector. By guiding the executive team, the President ensures that all departments work toward the common goal of revolutionizing medical device production. Adam Chen manages high-level relationships with key stakeholders and partners, fostering growth across diverse regional markets. This leadership role involves identifying new opportunities for technical innovation and service expansion. Through the strategic direction of corporate objectives, the President drives the long-term vision of the firm. Chen maintains a focus on delivering superior value to clients, ensuring that the company's technical solutions consistently meet the rigorous requirements of the medical manufacturing industry.

    Trent Steckler - Division President, Catheter Technologies

    Trent Steckler, the Division President, Catheter Technologies at MMT, directs the specialized development and manufacturing of catheter-based medical devices. Steckler oversees the engineering teams and production processes dedicated to this specific product line, ensuring that all technical solutions meet stringent industry standards. By integrating applications expertise into the catheter manufacturing workflow, the Division President, Catheter Technologies drives innovation in device performance. Trent Steckler manages the division's operational scale, focusing on delivering high-precision components to global healthcare providers. This leadership role involves collaborating with other division heads to share best practices and optimize resource utilization. Through the targeted management of catheter-related projects, the Division President, Catheter Technologies supports the company's mission to revolutionize medical device manufacturing. Steckler ensures that the division remains responsive to market trends, consistently delivering reliable and advanced solutions for complex medical applications.

    Vivian Stevens-Lyons - President & Owner

    Vivian Stevens-Lyons, the President & Owner at MMT, directs the foundational vision and long-term strategic trajectory of the company. Stevens-Lyons oversees the core business model, ensuring that the integration of applications expertise and technical solutions remains central to the firm's identity. By providing executive guidance, the President & Owner maintains the company's commitment to revolutionizing medical device manufacturing. Vivian Stevens-Lyons manages the overall corporate culture and high-level partnerships, fostering an environment of innovation and excellence. This leadership role involves making critical decisions regarding market positioning and the expansion of manufacturing-as-a-service capabilities. Through the active oversight of the organization's growth, the President & Owner ensures that the company remains a leader in the medical manufacturing space. Stevens-Lyons drives the strategic initiatives that define the firm's impact on the global healthcare industry, securing the company's future through consistent focus on quality and technical advancement.

    Jesse Metcalf - Division President, Guidewire & Abrasive Technologies

    Jesse Metcalf, the Division President, Guidewire & Abrasive Technologies at MMT, directs the specialized production and technical development of guidewire and abrasive components. Metcalf oversees the engineering and manufacturing teams responsible for these critical medical device elements, ensuring precision and reliability in every product. By leveraging applications expertise, the Division President, Guidewire & Abrasive Technologies drives the development of advanced manufacturing solutions tailored to these specific technologies. Jesse Metcalf manages the division's operational output, focusing on meeting the high-volume needs of medical device manufacturers across international markets. This leadership role involves coordinating with the broader executive team to ensure that division-specific goals align with the company's overall manufacturing-as-a-service strategy. Through the focused management of guidewire and abrasive production, the Division President, Guidewire & Abrasive Technologies supports the company's mission to provide superior technical solutions for the medical device industry.

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    Frequently Asked Questions Regarding MMT Top Executives and Leadership Team

    Who leads MMT?
    MMT is led by Amber Fields (Chief Financial Officer), along with executives such as Rick Stetler (Chief Operating Officer) and Adam Chen (President).
    Who is part of MMT’s executive team?
    The executive team of MMT includes leaders such as Amber Fields (Chief Financial Officer), Rick Stetler (Chief Operating Officer), Adam Chen (President) and other senior executives.
    How many executives does MMT have?
    MMT has 6 executives leading key business areas.
    What roles are included in MMT’s leadership team?
    The leadership team of MMT includes roles such as Chief Financial Officer, Chief Operating Officer, President, Division President, Catheter Technologies, President & Owner.