MX Welcomes New Board Member

Manifest MedEx is committed to providing every healthcare organization in California with the information they need to improve care, enhance health, and lower costs. To support these goals, MX welcomes Dr. J. Marc Overhage, Chief Health Information Officer, Elevance Health to our Board of Directors.

Marc is responsible for the design, development, and execution of Elevance Health’s strategic vision, policy, and planning related to health information technology (HIT) in ways that optimize operational efficiency and clinical outcomes. In his 35 years of experience, Marc’s work focuses on developing, deploying, and evaluating clinical information systems, emphasizing clinical decision support and health information exchange.

Marc joins an MX board that includes new members Kerry Heinrich, President and Chief Executive Officer, Adventist Health, and Peter Long, Ph.D., Executive Vice President of Strategy and Health Solutions, Blue Shield of California who both joined in 2022.

Kerry and Peter are leaders in community health and healthcare transformation. Kerry Heinrich serves as President and Chief Executive Officer of Adventist Health. He joined the Adventist Health Board of Directors in 2014 and was appointed System President and CEO effective Jan. 1, 2022. He came to Adventist Health from Loma Linda University Medical Center as CEO and Administrator of Loma Linda University Children’s Hospital and the Behavioral Medicine Center. Mr. Heinrich provided strategic leadership and oversight of the day-to-day operations of the six hospitals that together form Loma Linda University Medical Center. In addition, he served as Executive Vice President for Hospital Affairs of Loma Linda University Health. Mr. Heinrich received his bachelor’s degree in history and a minor in business with an emphasis in finance and management from Walla Walla University in Washington.

Peter Long is executive vice president, strategy and health solutions, at Blue Shield of California. He leads collaborations with healthcare providers, community leaders, and other stakeholders to design innovative clinical and community programs, healthcare delivery, and payment systems that provide all Californians access to value-based, high-quality, and affordable care. Previously, Peter was president and chief executive officer of Blue Shield of California Foundation, where he focused on building lasting and equitable solutions to make California the healthiest state and to end domestic violence.

As MX continues to accelerate data sharing across the state, we are thrilled to have Marc, Peter, and Kerry on our board! Their collective expertise and leadership in community health and healthcare transformation propel MX’s mission to advance data sharing that enhances health, improves care, and lowers cost across the state.


About Manifest MedEx  

As the largest nonprofit health data network in California, Manifest MedEx (MX) is an integral part of the state’s health data infrastructure, combining and delivering crucial health information for more than 34 million Californians across 126+ hospitals, 13 health plans, and over 1800 providers. Together, we are transforming the healthcare landscape across the state, supporting California as a leader in equitable, affordable, proactive, and compassionate medical care. For more information, visit and follow us at @ManifestMedEx. 

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