50 Most Influential Clinical Executives - 2020

Fields founded the primary-care group in 2013 and it is been growing fast ever since. He oversees 2,500 primary-care affiliates, with more than $3 billion of total medical spending in value-based contracts. In 2019, he put in place a medical home model and other practices to improve care for patients with chronic conditions. Those efforts resulted in drops in readmissions, among other things.