Mariann Yeager has more than 20 years of experience in the health information technology field. She currently serves as CEO for The Sequoia Project, a non-profit solely focused on advancing secure, interoperable nationwide health data sharing in the US. She leads the Recognized Coordinating Entity (RCE) effort, in close collaboration with the Office of the National Coordinator for Health IT to develop, implement, and maintain the Common Agreement component of the Trusted Exchange Framework and Common Agreement (TEFCA) and to operationalize the Qualified Health Information Network (QHIN) designation and monitoring process. The Sequoia Project serves as a steward of independently governed health IT interoperability initiatives, including the RSNA Image Share Validation Program and the Interoperability Matters program, which engages experts from across the healthcare and health IT communities to collaborate to solve discrete challenges to nationwide health information sharing through various workgroups. Ongoing Interoperability Matters workgroups include Information Sharing workgroup, Data Usability workgroup, and the Public Health workgroup. Under her leadership, The Sequoia Project supported, the startup, growth and maturation of two highly successfully interoperability initiatives, the eHealth Exchange and Carequality, which now operate as independent non-profit organizations. Prior to her tenure at The Sequoia Project, she worked with the HHS Office of National Coordinator (ONC) for five years on nationwide health information network initiatives. She also led the launch and operation of the first ambulatory and inpatient EHR certification program in the US.