FARMINGTON, Conn., December 17, 2020-- Diameter Health, a fast-growing leader in health data interoperability, has announced that it raised $18 million in a Series B funding round led by managed care organization Centene Corporation, with participation from existing investors Optum Ventures, LRVHealth, Connecticut Innovations and Activate Venture Partners. This brings Diameter Health's total funding to $30 million. "We are thrilled to have Centene Corporation join the Diameter Health investor syndicate in this round," said Eric Rosow, CEO and co-founder of Diameter Health.