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.

Susan Harrington

Senior Vice President

Finance and Business Development

Susan Harrington

Senior Vice President

Finance and Business Development

Susan joined Fresenius Medical Care North America in 2009, after working for 8 years in finance and operations at Fidelity Investments. During her 12-year career at FMCNA, Susan has supported or led investments and acquisitions totaling over $3B and worked collaboratively with physician practices in joint venture and M&A transactions. Her deal experience spans early stage and middle market companies in healthcare provider services and life sciences. Susan has extraordinary experience in finance, strategy and business development.

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.

Robin Surane

Vice President of Market Operations

Robin Surane

Vice President of Market Operations

Robin brings to InterWell Health a depth of health care leadership experience with a specific focus in the renal space. Robin started her career as a nurse and has held various leadership positions with progressively more responsibility including Vice President, Carolinas Medical Center with responsibility for dialysis, transplant and organ procurement. Robin was a co-founder of TeleHealth Solutions which was sold to Atrium Health and continues to process greater than 1 million calls per year. She recently served as Senior Director of Operations at Fresenius Kidney Care where she participated in the development and success of one of the first End Stage Renal Disease Seamless Care Organizations (ESCO) in the country and was her market’s End Stage Renal Disease Treatment Choices (ETC) lead.

Jennifer Kernc, RD, CSR, LD, FAND

Vice President, Market Development

Jennifer Kernc, RD, CSR, LD, FAND

Vice President, Market Development

Jennifer has over 20 years of renal market experience in the healthcare and pharmaceutical industry. She was the Director of Market Access Strategy-Renal for AstraZeneca where she led innovative value-based strategies and a payer marketing team. During her tenure at Shire Pharmaceuticals, Jen drove payer strategy and marketing for the full Shire portfolio, led U.S. marketing with global remits for a phosphate binder business and served as the National Account Director to U.S. dialysis organizations. Jen is also an accomplished renal dietitian leader with prior positions on the NKF CRN Executive Board and the JREN Editorial Board.

Additional Board Members

Jennifer Huneycutt, C.P.A.

Metrolina Nephrology

Jeffrey Hymes, M.D.

Executive Vice President, Global Head of Clinical Affairs of Fresenius Medical Care

Chief Medical Officer of Fresenius Kidney Care North America

Chairman of the Fresenius Kidney Care Pharmacy and Therapeutics Committee

Eric Maaske

Chief Operating Officer, Associates in Nephrology, Chicago, IL

David Pollack

President, Fresenius Health Partners

Susan Price

CEO and Managing Partner, Arizona Kidney Disease & Hypertension Associates, Phoenix, AZ

Manish Tanna, M.D.

Senior Physician and Executive Committee Member, Nephrology Associates of Northern Illinois/Indiana, Chicago, IL

Carney Taylor, M.D., M.B.A.

Co-President, Eastern Nephrology

Bill Valle

Chief Executive Officer, Fresenius Medical Care North America

Ruben Velez, M.D., FACP

Dallas Nephrology Associates

Charles Zachem, D.O., FASN

Eugene Springfield Nephrology Associates