Meet Our Team

CHESS is a physician-led health care services company with the knowledge and experience to guide health systems, physician groups, accountable care organizations or independent physician practices through the transition to value-based care.

Michael Berwanger, JD, CPHC

Chief Compliance & Legal Officer

​Michael returned to CHESS as the Chief Compliance and Legal Officer and Corporate Secretary in June 2019 after previously serving at Cornerstone Health Care, PA and CHESS from 2012-2016.  Prior to his return, he was Director of Quality Management and Compliance and HIPAA Privacy Official for MedCost, LLC from 2016-2019. In his current role, Michael is responsible for overseeing and providing guidance relating to corporate, legal, and regulatory compliance. He also provides guidance and oversight to the company’s risk management, regulatory affairs, and HIPAA Privacy programs. Michael earned his JD at New England School of Law.

Jesse C. James, MD, MBA

Chief Medical Officer

Dr. Jesse C. James majored in biology at Florida A&M and is a graduate of both the Yale School of Medicine and the Yale School of Management. He completed his medical residency in Internal and Preventative Medicine at the UNC School of Medicine in Chapel Hill. James has much experience with the Department of Health and Human Services Office of the National Coordinator for Health IT (ONC-HIT). There, he was deeply involved in the EHR Meaningful Use program, development of clinical quality measures, and served as clinical advisor on multiple federal committees. Other notable achievements include receiving the honorary award for excellence in Innovation at the ONC-HIT, and serving as a co-chair for the MACRA Technical Expert Panel for the Center for Medicare and Medicaid Services Quality Measure Development. Dr. James served as Associate Medical Director at Inovalon, and most recently as Chief Medical Information Officer at Evolent, where he worked as the clinical architect for enterprise information systems and data use, working collaboratively across the organization to enhance clinical goals in value-based development.

Mark Lautzenheiser

Chief Financial Officer

Serving as Chief Financial Officer for CHESS, Mark Lautzenheiser not only focuses on the financial management of the company, but also provides financial and analytical expertise to our clients. Mark joined the CHESS team in February 2015 with over 16 years of experience in healthcare analytics. The data and financial analytic reports that Mark provides plays a key role in determining the current and future health care spend for each of our clients, allowing them to see the impact, both in quality and in cost, their value-based initiatives have on their health system, ensuring they achieve the maximum benefit for their ACO.

Yates Lennon, MD, MMM

President and Chief Transformation Officer

Dr. Yates Lennon currently serves as the President and Chief Transformation Officer for CHESS. He is known nationally for his work in quality, previously serving on the American Medical Group Association (AMGA) Quality Leadership Council. Dr. Lennon has a deep understanding of practice transformation and how to engage physicians and staff. His expertise allows him to translate his knowledge into initiatives that physicians and staff understand and buy into, in order to ultimately transform patient care. Dr. Lennon began his administrative career as a member of Cornerstone Health Care’s Patient Expectations Are Key (PEAK) team and later became the Chief Quality Officer for Cornerstone. Dr. Lennon joined CHESS in May of 2018 as the Chief Transformation Officer and in his short time of service for CHESS has overseen a robust business development funnel and the onboarding of two new health systems to the CHESS CIN. In June of 2019, Dr. Lennon assumed the role of Interim President for CHESS. On January 1, 2021, the CHESS Board of Managers appointed him permanent president. Dr. Lennon received his Master in Medical Management (MMM) degree from Carnegie Mellon University in May 2017.