Clinical Leadership With significant experience and expertise, our physician leaders collaborate with other nephrologists to transform kidney care. Clinical Leadership Team DaVita-affiliated physicians have access to DaVita’s Office of the Chief Medical Officer (OCMO) physician leaders to collaborate and receive input whenever needed. Dedicated to improving kidney care and the lives of patients, OCMO leaders oversee initiatives such as: Developing a transformative vision of improved health care Collaborating with the nephrologist community Taking accountability for improving results Addressing challenging clinical topics Investing in physician development across all levels Striving for a high level of physician satisfaction Office of the Chief Medical Officer Jeffrey Giullian, MD, MBA, FASN Chief Medical Officer, DaVita Kidney Care George R. Aronoff, MD, MS, FACP, FASN Vice President of Clinical Affairs, DaVita Kidney Care Steven M. Brunelli, MD, MSCE Vice President and Medical Director, DaVita Health Economics and Outcomes Research Partha Das, MBBS, MRCP (Neph), MSc Chief Medical Officer, DaVita International Mark R. Kaplan, MD Vice President, DaVita Medical Affairs Mahesh Krishnan, MD, MPH, MBA, FASN Group Vice President, Research and Development David L. Mahoney, MD Chief Medical Officer, Lifeline Vascular Access Care Robert Merrell, MD, FACP Vice President, DaVita Clinical Risk Support Allen R. Nissenson, MD, FACP, FASN, FNKF Emeritus CMO, DaVita Kidney Care John A. Robertson, MD Vice President, DaVita Clinical Support Services David A. Roer, MD, FACP, FAHA, FASN Vice President, Medical Affairs, DaVita Integrated Care Martin Schreiber, MD Chief Medical Officer, Home Modalities Francesca Tentori, MD, MSCI Vice President, DaVita Outcomes Research and Patient Empowerment David B. Van Wyck, MD Vice President, DaVita Clinical Support Services Adam Weinstein, MD Vice President, DaVita Medical Affairs and Clinical IT Services FIND A CENTER MYDAVITA SIGN IN OR REGISTER Education Kidney Disease Life with CKD Kidney Smart Classes Education Videos Kidney Care Vocabulary Additional Resources Diet & Nutrition Recipes Saved Recipes Cookbooks Dining Out Guides Food Analyzer Kidney Diet Videos Treatment & Services Dialysis Treatments Home Dialysis Insurance & Financial Management Prescription Management Travel Support Emergency Services Five-Star Quality Rating Transplant Why Choose DaVita Integrated Kidney Care Tools Find a Center GFR Calculator Kidney Disease Risk Quiz Treatment Evaluator DaVita Diet Helper DaVita Health Portal Forums Patient Payment Portal Español For Physicians Partners Hospitals Health Plans Skilled Nursing Facilities DaVita International About Careers Newsroom Investors Blogs Help Center & FAQs Contact Us DaVita Businesses DaVita Integrated Kidney Care DaVita Venture Group DaVita Clinical Research DaVita Physician Solutions © 2004-2021 DaVita Inc. All rights reserved. Notice of Nondiscrimination | Privacy Policy | Cookie Settings | Notice of Privacy Practices | Exercise Your Privacy Rights | Terms of Use | Accessibility Statement | Help Center | Site Map Cash Prices/Costs for Coronavirus (COVID) Diagnostic Tests This site is for informational purposes only and is not intended to be a substitute for medical advice from a medical provider. Please check with a medical professional if you need a diagnosis and/or for treatments as well as information regarding your specific condition. In case of emergency, call 9-1-1 or go to the nearest emergency department. Help Center We use cookies to provide website functionality, to analyse our traffic, to personalise content and to enable social media functionality. For further information, please see our Privacy Policy COOKIE SETTINGS ESSENTIAL COOKIES ONLY ACCEPT ALL COOKIES