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LeAnne M. Zumwalt has served as a member of our Board of Directors since February 2021. From January 2000 to January 2021, Ms. Zumwalt served in various roles at DaVita Inc., one of the largest providers of kidney care services in the United States (DaVita). From July 2011 to January 2021, Ms. Zumwalt served as DaVita’s Group Vice President, Government Affairs, and from November 2007 to June 2020 also led DaVita’s purchasing operations. From January 2000 to July 2011, Ms. Zumwalt served as a Vice President of DaVita in many capacities, including as Vice President, Investor Relations from January 2000 to October 2009. From 1997 to 1999, Ms. Zumwalt served as the Chief Financial Officer (CFO) of Vivra Specialty Partners, Inc., a privately held healthcare service and technology firm.

From 1991 to 1997, Ms. Zumwalt held various executive positions, including CFO, at Vivra Incorporated, a publicly held provider of renal dialysis services and other healthcare services. Prior to joining Vivra Incorporated, Ms. Zumwalt was a Senior Manager at Ernst & Young LLP. From July 2018 to December 2020, Ms. Zumwalt served on the Board of Directors of Adeptus Health Inc., a privately held healthcare services company, and from November 2001 to September 2017, Ms. Zumwalt served on the Board of Directors of The Advisory Board Company, which provided advice and best practices using research, technology, and consulting to improve healthcare and education institution performance. Ms. Zumwalt received her B.A. in Business Administration from Pacific Union College.