Thyme Care Executive and Leadership Team

July, 2026

Leadership Overview

Thyme Care has 5 executives leading key functions including operations, finance, legal, and clinical strategy.

Driven by a commitment to transforming the member experience, Thyme Care is dedicated to enhancing the cancer journey through personalized navigation and support from expert oncology teams, aiming to improve access, outcomes, and affordability.

Leadership Roles at Thyme Care

  • Chief Financial Officer - Jesse Waldron
  • Chief Operating Officer - Marcia Macphearson
  • MD President - Bradford Diephuis
  • Chief of Staff - Jessa Kelley
  • Chief Legal Officer - Michael Markowtiz
  • Jesse Waldron - Chief Financial Officer

    Jesse Waldron, the Chief Financial Officer at Thyme Care, directs the financial strategy and fiscal health of the oncology navigation leader. Waldron oversees all financial operations, including budgeting, forecasting, and financial planning, ensuring the company's ability to enhance access, outcomes, and affordability of cancer care. This leadership position involves managing financial partnerships with health plans, oncology groups, and primary care groups, supporting the delivery of comprehensive cancer care solutions. Jesse Waldron's fiscal management is crucial for the 24/7 virtual support model and the proactive reduction of healthcare costs. By optimizing financial resources, the Chief Financial Officer drives Thyme Care's commitment to transforming the member experience and maintaining sustainable growth. Waldron's expertise ensures the financial viability necessary to support Thyme Care's mission of coordinated and cost-effective cancer care.
    Jesse Waldron

    Marcia Macphearson - Chief Operating Officer

    Marcia Macphearson, the Chief Operating Officer at Thyme Care, directs the operational framework supporting the company's oncology navigation mission. Overseeing daily functions, Macphearson ensures the seamless delivery of personalized navigation and support from expert oncology teams, directly impacting member access and outcomes. This leadership role involves optimizing the 24/7 virtual support infrastructure and coordinating with health plans, oncology groups, and primary care groups to integrate Thyme Care's comprehensive solutions. By focusing on operational efficiency, Macphearson drives the proactive reduction of healthcare costs and enhances communication across the cancer care community. The Chief Operating Officer's strategic oversight guarantees the effective execution of Thyme Care's commitment to transforming the member experience throughout their cancer journey. Marcia Macphearson's operational leadership is critical to achieving enhanced affordability and coordinated care delivery.
    Marcia Macphearson

    Bradford Diephuis - MD President

    Bradford Diephuis, MD President at Thyme Care, leads the clinical strategy and medical direction for the oncology navigation services. Diephuis ensures the highest standard of care is integrated into personalized navigation and support provided by expert oncology teams, directly enhancing member outcomes and the overall cancer journey. This critical role involves guiding the clinical application of Thyme Care's services to improve access and affordability, supporting the 24/7 virtual support model. Bradford Diephuis collaborates with health plans, oncology groups, and primary care groups to champion comprehensive and coordinated cancer care solutions. The MD President's medical expertise drives Thyme Care's commitment to transforming the member experience and proactively reducing healthcare costs through evidence-based practices. Diephuis's leadership ensures clinical excellence and fosters trust within the cancer care community.

    Jessa Kelley - Chief of Staff

    Jessa Kelley, the Chief of Staff at Thyme Care, facilitates strategic initiatives and operational alignment across the organization. Working closely with executive leadership, Kelley ensures the effective implementation of Thyme Care's oncology navigation services, enhancing the cancer journey for members. This role involves driving cross-functional collaboration to improve access, outcomes, and affordability of cancer care, supporting the 24/7 virtual support model. Jessa Kelley plays a pivotal part in translating the company's mission into actionable plans, coordinating efforts between health plans, oncology groups, and primary care partners. By streamlining internal processes and managing key projects, the Chief of Staff contributes directly to transforming the member experience and proactively reducing healthcare costs. Kelley's strategic support ensures cohesive execution of Thyme Care's commitment to coordinated cancer care solutions.
    Michael Markowtiz, the Chief Legal Officer at Thyme Care, provides critical legal counsel and oversees regulatory compliance for the oncology navigation services. Markowtiz ensures that all operations, from personalized navigation to 24/7 virtual support, adhere to relevant legal frameworks and industry standards, safeguarding member data and company integrity. This role is essential for managing agreements with health plans, oncology groups, and primary care groups, ensuring robust partnerships that enhance access, outcomes, and affordability of cancer care. Michael Markowtiz's legal guidance supports Thyme Care's mission to transform the member experience and proactively reduce healthcare costs. The Chief Legal Officer's expertise is fundamental to navigating the complex healthcare landscape and maintaining Thyme Care's commitment to coordinated and compliant cancer care solutions. Markowtiz's strategic legal oversight protects the company's interests and fosters trust within the cancer care community.

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    Frequently Asked Questions Regarding Thyme Care Top Executives and Leadership Team

    Who leads Thyme Care?
    Thyme Care is led by Jesse Waldron (Chief Financial Officer), along with executives such as Marcia Macphearson (Chief Operating Officer) and Bradford Diephuis (MD President).
    Who is part of Thyme Care’s executive team?
    The executive team of Thyme Care includes leaders such as Jesse Waldron (Chief Financial Officer), Marcia Macphearson (Chief Operating Officer), Bradford Diephuis (MD President) and other senior executives.
    How many executives does Thyme Care have?
    Thyme Care has 5 executives leading key business areas.
    What roles are included in Thyme Care’s leadership team?
    The leadership team of Thyme Care includes roles such as Chief Financial Officer, Chief Operating Officer, MD President, Chief of Staff, Chief Legal Officer.