Our Team

Meet the people and faces behind Centraforce Health.

  • Stephen Newman, M.D.

    Executive Chairman and Chief Medical Officer

    Steve brings over 20 years of executive level healthcare management experience, including a recent role as Chief Operating Officer of Tenet Health System. In addition, his 15 years as a pediatric gastroenterologist provides a unique clinician perspective. Steve understands the challenges of gaining insight into population health that can truly make a difference. His work with our team helps us give our clients a competitive edge.

  • John Brady


    John leads CentraForce Health with the experience and management skills gained from over two decades of starting, investing in, operating, advising, and guiding a number of highly successful analytics, software, and marketing services companies. He has a deep passion for the power of business analytics that energizes our team and our clients.

  • Jay Kleinman


    A former Vice President with Conifer Health, Jay brings deep expertise in value-based care, population health and related healthcare services. His knowledge and experience drives him to find population-centric solutions that help clients find new pathways to success. If you want to grow your business, regardless of what kind of healthcare business that is, start by talking with Jay.

  • Chris Geppi

    Vice President

    With more than a decade of healthcare IT and services-specific experience, Chris is an expert at recommending solutions and use cases for every level of the healthcare industry, including payors, providers and self-funded employers. Chris brings a robust understanding of the advantages of the latest population science applications. His expertise helps our customers seamlessly transition into the next generation of data-driven decision making.

  • Jon Pelzer

    Chief Product Officer

    A pioneer of combining media, behavioral sciences and response metrics research, Jon has spent the past 30 years developing new technologies to grow businesses. Jon has created groundbreaking healthcare analytic products that deliver unique population-centric intelligence.

  • Alex Diaz-Asper

    Chief Financial Officer

    Alex’s extensive experience in finance operations, mergers and acquisitions, venture capital and private equity provides him with the quick responsiveness and knowledge needed to help start-up companies reach their goals.

  • Robb Williams

    Senior Vice President, Technology & Product Development

    Robb's technical savvy and understanding of the database development have allowed him to create experiences that engage both technical and non-technical teams with the dissemination of complex, multi-layered data.

  • Ellen Pelzer

    Population Development Operations

    Ellen’s expertise in secondary data allows her to seamlessly oversee the process of linking together datasets to translate them into unique Population definitions for our clients.

  • Pauline Giordani

    Vice President of Operations

    Pauline’s deep experience in both traditional and interactive mediums allow her to seamlessly navigate the course for CentraForce Health. Her strong understanding of product development and process ensure we are always on track.

  • Claudia Contino

    Data Support Manager

    Claudia wears a couple of critical client hats on our team. With her data analytics hat, she optimizes the powerful population insights for our clients by gathering and analyzing datasets for dashboard development. When working with clients, she uses her experience with our datasets to effectively communicate with our target audience and provide the helpful support they need.

  • Sara Fagen


    Sara is one of the nation’s leading political and issue strategists. She serves on the board of CentraForce Health, where she offers considerable insight and expertise in leveraging the full potential of technology and communications.