Mark Caputo
Chairman of the Board,
Chief Executive Officer

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Mary Dittrich, MD, FASN
Executive Vice President,
Chief Medical Officer

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Sarrah Johnson, DNP, MBA, RN
Chief Diversity & Inclusion Officer and
Senior Vice President, Operations

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Nitin Jain
President, Payer Solutions
& Value Based Care

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Thao Pascual, MD, FASN 
Associate Chief Medical Officer 

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Geoffrey A. Block, MD 
Associate Chief Medical Officer &
Senior Vice President,
Clinical Research & Medical Affairs

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Debbie Taylor, MSN, RN, CNN
Senior Vice President,
Chief Nursing Officer

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Steve Nottingham
Co-Chief Operating Officer

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Alex Portet 
Co-Chief Operating Officer

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Thomas L. Weinberg
Executive Vice President,
General Counsel

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James D. Shelton 
Executive Vice President,
Chief Financial Officer

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Tim Buono
Executive Vice President, 
Chief Development Officer - Dialysis

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Tom Allocco
Senior Vice President,
Technical Services

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Kelly Barker
Senior Vice President,
Finance

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Christa Blumenshine
Chief Financial Officer,
Dialysis Operations

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Heather Erwin
Senior Vice President,
Internal Audit

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Nelson Imaña
Chief Information Officer

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Jud Jacobs
Senior Vice President, 
Real Estate & Development

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Lynelle McLain
Senior Vice President,
Chief Accounting Officer

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Ghentry Pace
Chief Revenue Officer

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Paul Peoples
Chief Compliance Officer

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Dave Richardson
Divisional President,
Operations

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Michael Rocklin, MD 
Vice President,
Clinical Affairs

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Phil Sarnowski 
Senior Vice President,
Business Transformation Partner

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