Tempus Executive and Leadership Team

October, 2026

Leadership Overview

Tempus has 7 executives leading key functions including technology architecture, clinical marketing, information systems, diagnostic innovation, operational scaling, revenue growth, and medical strategy.

Committed to revolutionizing precision medicine through advanced data science, Tempus delivers transformative algorithmic insights that empower clinicians to provide highly personalized therapeutic care for complex diseases.

Leadership Roles at Tempus

  • Chief Operating Officer, Data & Apps - Max Banaszak
  • Chief Technology Officer - Shane Colley
  • Chief Marketing Officer - Patricia Spiller
  • Chief Information Officer - Natasha Esprey
  • Chief Technology Officer, Diagnostics - Donavan Cheng
  • Business Development Director, Tempus Compass & Chief Revenue Officer, Oncology Trials, Ai & Real-World Data - Janelle Okrzesik
  • Chief Medical Officer, Diagnostics - Thomas Slavin
  • Max Banaszak - Chief Operating Officer, Data & Apps

    Max Banaszak, the Chief Operating Officer, Data & Apps at Tempus, executes the operational strategy for the company's software applications and data-driven service delivery. Banaszak oversees the internal processes that transform raw clinical data into user-friendly tools for medical practitioners. By managing the cross-functional teams responsible for application development and data deployment, the Chief Operating Officer, Data & Apps ensures that the platform remains scalable and responsive to clinical needs. Max Banaszak coordinates with the technology and medical departments to streamline the delivery of predictive insights to doctors. This leadership role involves optimizing the operational workflows that support the company's vast library of clinical information. Through the implementation of efficient project management methodologies, the Chief Operating Officer, Data & Apps drives the successful deployment of new features, ensuring that the organization's precision medicine tools consistently deliver high-value, actionable data to the healthcare ecosystem.

    Shane Colley - Chief Technology Officer

    Shane Colley, the Chief Technology Officer at Tempus, directs the development of the core algorithmic engine that powers the company's multimodal data platform. Colley architects the neural networks required to ingest and normalize vast quantities of unstructured clinical text alongside deep molecular sequencing data. By overseeing the engineering teams responsible for these complex data pipelines, the Chief Technology Officer ensures that medical practitioners receive actionable, precision-based insights. Shane Colley maintains a focus on scaling the infrastructure to support global research initiatives, enabling the organization to identify hidden genetic patterns across diverse patient populations. This leadership role involves constant collaboration with data scientists to refine predictive modeling capabilities. Through the optimization of these proprietary systems, the Chief Technology Officer drives the technological evolution of the business, ultimately facilitating the transition from traditional medical treatments to highly tailored, data-driven therapeutic models for oncology and cardiology.
    Shane Colley

    Patricia Spiller - Chief Marketing Officer

    Patricia Spiller, the Chief Marketing Officer at Tempus, manages the strategic positioning of the company's precision medicine platform within the global healthcare market. Spiller drives brand awareness by highlighting the unique integration of clinical data science and genomic diagnostics to medical institutions and research partners. Overseeing the communication of complex technical value propositions, the Chief Marketing Officer ensures that the organization's mission reaches key stakeholders in oncology and neuropsychiatry. Patricia Spiller coordinates with product teams to translate advanced algorithmic capabilities into clear, market-facing narratives that emphasize improved patient outcomes. This leadership role involves expanding the company's footprint across North American and international clinical networks. By aligning marketing initiatives with the evolving needs of the healthcare ecosystem, the Chief Marketing Officer secures the firm's reputation as a leader in AI-driven diagnostics, effectively bridging the gap between sophisticated computational analysis and practical, bedside medical application.
    Patricia Spiller

    Natasha Esprey - Chief Information Officer

    Natasha Esprey, the Chief Information Officer at Tempus, governs the integrity and security of the massive clinical and molecular data libraries that define the company's operational foundation. Esprey manages the information architecture required to unify disparate patient histories into comprehensive, multimodal profiles. By overseeing the deployment of robust data governance frameworks, the Chief Information Officer ensures compliance with stringent healthcare regulations while maintaining high-speed access for clinical practitioners. Natasha Esprey directs the integration of internal laboratory systems with external electronic health records to facilitate seamless data flow. This leadership role involves constant collaboration with the engineering and security teams to protect sensitive genetic information. Through the implementation of advanced data management protocols, the Chief Information Officer supports the organization's ability to forecast therapeutic responses, ultimately driving the efficiency and reliability of the entire precision-based diagnostic platform across all operational regions.
    Natasha Esprey

    Donavan Cheng - Chief Technology Officer, Diagnostics

    Donavan Cheng, the Chief Technology Officer, Diagnostics at Tempus, leads the technical innovation within the company's state-of-the-art laboratory facilities. Cheng architects the sequencing workflows that generate the deep molecular data essential for the firm's diagnostic profiles. By overseeing the implementation of high-throughput genomic technologies, the Chief Technology Officer, Diagnostics ensures that the platform captures precise genetic markers for oncology and infectious disease analysis. Donavan Cheng maintains a focus on integrating these laboratory outputs with the broader AI-driven data engine to enhance therapeutic correlations. This leadership role involves managing the technical roadmap for diagnostic hardware and software, ensuring that the company remains at the forefront of molecular science. Through the continuous refinement of sequencing processes, the Chief Technology Officer, Diagnostics drives the accuracy of patient-specific profiles, directly supporting the organization's mission to provide actionable, precision-based insights to medical practitioners worldwide.
    Donavan Cheng

    Janelle Okrzesik - Business Development Director, Tempus Compass & Chief Revenue Officer, Oncology Trials, Ai & Real-World Data

    Janelle Okrzesik, the Business Development Director, Tempus Compass & Chief Revenue Officer, Oncology Trials, Ai & Real-World Data at Tempus, drives the commercial expansion of the company's oncology and real-world data initiatives. Okrzesik manages the strategic partnerships that integrate the firm's precision medicine platform into clinical trial networks. By overseeing the revenue generation strategies for AI-driven research services, the Business Development Director, Tempus Compass & Chief Revenue Officer, Oncology Trials, Ai & Real-World Data ensures that the organization achieves sustainable growth. Janelle Okrzesik coordinates with pharmaceutical partners to leverage real-world data for therapeutic development. This leadership role involves identifying new market opportunities for the Tempus Compass tool, expanding the reach of the company's diagnostic services. Through the execution of targeted business development plans, the Business Development Director, Tempus Compass & Chief Revenue Officer, Oncology Trials, Ai & Real-World Data secures the financial foundation necessary to support the company's long-term mission of transforming healthcare.

    Thomas Slavin - Chief Medical Officer, Diagnostics

    Thomas Slavin, the Chief Medical Officer, Diagnostics at Tempus, provides the clinical oversight necessary to ensure the medical validity of the company's diagnostic outputs. Slavin directs the interpretation of molecular sequencing data, ensuring that findings translate into meaningful therapeutic recommendations for oncologists and other specialists. By overseeing the clinical review processes, the Chief Medical Officer, Diagnostics ensures that the platform's predictive models align with current medical standards and patient care requirements. Thomas Slavin maintains a focus on the intersection of genomic diagnostics and clinical practice, guiding the development of new diagnostic tests. This leadership role involves collaborating with the technology teams to refine the clinical utility of the company's data engine. Through the application of deep medical expertise, the Chief Medical Officer, Diagnostics drives the accuracy and relevance of the firm's diagnostic services, ultimately empowering practitioners to make informed, precision-based decisions for complex patient cases.
    Thomas Slavin

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    Frequently Asked Questions Regarding Tempus Top Executives and Leadership Team

    Who leads Tempus?
    Tempus is led by Max Banaszak (Chief Operating Officer, Data & Apps), along with executives such as Shane Colley (Chief Technology Officer) and Patricia Spiller (Chief Marketing Officer).
    Who is part of Tempus’s executive team?
    The executive team of Tempus includes leaders such as Max Banaszak (Chief Operating Officer, Data & Apps), Shane Colley (Chief Technology Officer), Patricia Spiller (Chief Marketing Officer) and other senior executives.
    How many executives does Tempus have?
    Tempus has 7 executives leading key business areas.
    What roles are included in Tempus’s leadership team?
    The leadership team of Tempus includes roles such as Chief Operating Officer, Data & Apps, Chief Technology Officer, Chief Marketing Officer, Chief Information Officer, Chief Technology Officer, Diagnostics.