About Us
How do we do it? With expertise and a tight connection to delivery. Oh, and with dedicated and enthusiastic team members and a little fun thrown into the mix.
Leadership
Cristina Green
Vice President, General Manager
Cristina Green serves as the General Manager of DaVita Clinical Research (DCR). With over 27 years of experience in the clinical research field, Cristina has led global teams dedicated to boosting clinical trial enrollment while maintaining regulatory compliance, data integrity, and patient safety. She is particularly passionate about expanding clinical research across more sites and streamlining workflows to enhance operational efficiency and quality. Cristina is a graduate of Vanderbilt University. Read more
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Liz Sonsalla
Director, Clinical Research Integration
Liz Sonsalla joined DCR 15 years ago and has served in a myriad of operations and leadership roles during that timeframe. From project management, Investigator Driven research, clinical research integration, and business development, Liz has a vast knowledgebase to help sponsors, CROs, physicians and research sites determine the best pathway to safely and effectively execute research in the renal space. She earned from BA from Saint Mary’s College, Notre Dame double majoring in Political Science and Psychology. Read more
Meet the rest of our leadership teamLeadership
Steven Brunelli MD, MSCE
Vice President and Medical Director of Health Economics and Outcomes Research
Prior to joining DCR, he was a faculty member at Harvard Medical School and the Brigham and Women’s Hospital, where he directed an active clinical research group focusing on chronic kidney disease, pharmacoepidemiology, and pharmacoeconomics, and dialysis outcomes epidemiology, as well as the hospital’s dialysis service. He has served on the American Society of Nephrology’s Dialysis Advisory Group and its Comparative Effectiveness Taskforce. He has published over 70 peer reviewed publications. He serves on editorial boards at the Journal of… Read more
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Francesca Tentori, MD, MSCI
Medical Director, VP, DaVita Outcomes Research and Patient Empowerment
Francesca Tentori, MD, MS is the medical director of outcomes research and patient empowerment at DaVita and an adjunct instructor in medicine at Vanderbilt University. Dr. Tentori is an internationally renowned outcomes research investigator in kidney disease and dialysis, with extensive experience in a variety of settings, from disadvantaged populations to not-for-profit organizations. She is passionate about integrating the goals and perspectives of individuals with kidney disease into the delivery of high-quality care. She graduated from the University of Milan… Read more
Meet the rest of our leadership teamResources
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Press Releases
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DaVita Honors 25 Years of Clinical Advancement in Chronic Disease Care
Largest kidney care research arm advances science to inform care delivery DENVER, Aug. 27, 2025 /PRNewswire/ — As part of its 25th-anniversary celebration, DaVita, a leading provider of comprehensive kidney care, is proud...
Events
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ASN Kidney Week 2025
American Society of Nephrology (ASN) Kidney Week 2025 will take place from November 5-9, 2025 at the George R. Brown Convention Center in Houston, TX. Join DaVita Clinical Research and ...
Blog
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Obesity & Chronic Kidney Disease (CKD)
There are currently more than 30 million people in the United States living with chronic kidney disease (CKD), a condition that impacts the ability of the body to filter and...