WellStreet Executive and Leadership Team

May, 2026

Leadership Overview

WellStreet has 4 executives leading key functions including strategy, finance, people operations, and growth.

Driven by a commitment to best-in-class quality, WellStreet continues evolving to meet patient needs, leveraging strategic partnerships to expand its network and enhance patient experience across multiple health systems.

Leadership Roles at WellStreet

  • Chief Executive Officer - Lisa Mikkelsen
  • Chief Financial Officer - Thomas Simons
  • President & Chief Growth Officer - Lee Resnick
  • Chief People Officer - Michelle Ansley
  • Lisa Mikkelsen - Chief Executive Officer

    Lisa Mikkelsen, the Chief Executive Officer at WellStreet, directs the overarching strategy and operational execution for the organization. Mikkelsen guides the company's expansion efforts, building upon its foundation as an independent Urgent Care operator and evolving into a network of partnerships with major healthcare systems like Piedmont Healthcare, Corewell Health, University Hospitals, and Prisma Health. Overseeing all facets of the business, Mikkelsen ensures alignment with the core mission of providing best-in-class quality and patient experience. This leadership role involves navigating complex healthcare landscapes and fostering innovation to meet future patient demands. By championing a culture of continuous improvement, Lisa Mikkelsen drives the strategic vision that underpins WellStreet's sustained growth and market presence across North Georgia, Southeastern Michigan, and beyond.
    Lisa Mikkelsen

    Thomas Simons - Chief Financial Officer

    Thomas Simons, the Chief Financial Officer at WellStreet, manages all financial operations and fiscal strategy for the organization. Simons oversees budgeting, financial planning, and resource allocation, ensuring the company's financial health and stability across its expanding network. This role is critical in supporting the growth initiatives and partnership models that define WellStreet's market footprint, from its origins in Atlanta to its current multi-state operations. By analyzing financial performance and identifying opportunities for fiscal optimization, the Chief Financial Officer directly contributes to the company's ability to invest in new locations and enhance patient care services. Thomas Simons ensures robust financial controls are in place, supporting the long-term sustainability and strategic objectives of WellStreet's evolving business model.

    Lee Resnick - President & Chief Growth Officer

    Lee Resnick, the President & Chief Growth Officer at WellStreet, drives the strategic expansion and partnership development for the organization. Resnick spearheads initiatives to launch and scale urgent care networks under various brands, including Piedmont Urgent Care and Beaumont Urgent Care, and more recently with University Hospitals and Prisma Health. This role is central to WellStreet's evolution from a single operator to a multi-state network, focusing on identifying and securing new growth opportunities. By fostering key relationships with healthcare systems and overseeing market entry strategies, Lee Resnick ensures the company's continued expansion and market penetration. The President & Chief Growth Officer's efforts directly support the company's mission to meet evolving patient needs through accessible, high-quality care.
    Lee Resnick

    Michelle Ansley - Chief People Officer

    Michelle Ansley, the Chief People Officer at WellStreet, leads all human resources functions and talent management strategies. Ansley is responsible for cultivating a positive and productive work environment that supports WellStreet's commitment to its teammates and patients. This involves developing programs for recruitment, employee engagement, professional development, and retention across all operational locations. By focusing on people operations, Michelle Ansley ensures that the organization has the skilled and dedicated workforce necessary to deliver best-in-class patient care. The Chief People Officer plays a vital part in maintaining the company culture as WellStreet expands through new partnerships and geographic reach. Ansley's leadership ensures that the human capital strategy aligns with the company's mission and growth objectives.

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    Frequently Asked Questions Regarding WellStreet Top Executives and Leadership Team

    Who leads WellStreet?
    WellStreet is led by Lisa Mikkelsen (Chief Executive Officer), along with executives such as Thomas Simons (Chief Financial Officer) and Lee Resnick (President & Chief Growth Officer).
    Who is part of WellStreet’s executive team?
    The executive team of WellStreet includes leaders such as Lisa Mikkelsen (Chief Executive Officer), Thomas Simons (Chief Financial Officer), Lee Resnick (President & Chief Growth Officer) and other senior executives.
    How many executives does WellStreet have?
    WellStreet has 4 executives leading key business areas.
    What roles are included in WellStreet’s leadership team?
    The leadership team of WellStreet includes roles such as Chief Executive Officer, Chief Financial Officer, President & Chief Growth Officer, Chief People Officer.