Our Leadership

Kim Sonnen

President and Board Member, InterWell Health

Kim Sonnen

President and Board Member, InterWell Health

Kim is a 26-year veteran of the dialysis industry and a former Senior Vice President at Fresenius Medical Care North America, where she led their negotiations with commercial insurers, developing new models for engaging with and developing coordination among government payors, exchange-based plans, risk-bearing provider systems, and other new payors. She also played a leading role in the development of their strategic business operations and dialysis services business. Kim previously served as Chief Operations Officer of Renaissance Health Care and was a Director at Gambro Healthcare, Inc.

Karen Gledhill

Executive Vice President and Board Member, InterWell Health

Senior Vice President and General Counsel, Fresenius Medical Care North America

Karen Gledhill

Executive Vice President and Board Member, InterWell Health

Senior Vice President and General Counsel, Fresenius Medical Care North America

Karen joined Fresenius Medical Care North America in 2014 after serving as outside counsel to the organization for 18 years, and is currently Senior Vice President and General Counsel. She was formerly a shareholder and chair of the healthcare practice group at the law firm of Robinson, Bradshaw, & Hinson, P.A. Karen has provided legal advice to the dialysis industry for 26 years, with a focus on mergers and acquisitions, joint ventures, and healthcare regulatory matters.

George Hart, M.D.

Co-Chief Medical Officer, InterWell Health

President, Metrolina Nephrology Associates

George Hart, M.D.

Co-Chief Medical Officer, InterWell Health

President, Metrolina Nephrology Associates

George has a 28-year career in nephrology and currently is President and a practicing nephrologist with Metrolina Nephrology Associates in Charlotte, North Carolina. He joined InterWell Health in 2020, devoting half of his time to his role as co-Chief Medical Officer.

Terry Ketchersid, M.D., M.B.A.

Co-Chief Medical Officer, InterWell Health

Chief Medical Officer, Integrated Care Group, Fresenius Medical Care North America

Terry Ketchersid, M.D., M.B.A.

Co-Chief Medical Officer, InterWell Health

Chief Medical Officer, Integrated Care Group, Fresenius Medical Care North America

Terry brings 28 years of experience in nephrology and value based arrangements. He splits his time between two roles, first as a Co-Chief Medical Officer of InterWell Health and also as Chief Medical Officer of Fresenius Medical Care North America’s Integrated Care Group, a division with over $4.5 billion of medical spend under value based arrangements.