Leadership

Chief Executive Officer

John Walker, ACHE, joined Medical City Lewisville as chief executive officer in October 2022.

Prior to this role, Walker served as chief operating officer at Medical City Denton where his steady leadership, focus on exceptional quality, dedication to physician collaboration and colleague support, and vision for strategic growth contributed to facility-wide enhancements. During his tenure, the Level II Trauma Center earned recognition for outstanding patient care and quality, including a Leapfrog Group "A" safety rating.

Walker began his career with Medical City Healthcare in 2011 as an administrative resident at Medical City McKinney and served in progressive leadership roles at Medical City McKinney and Medical City Dallas.

He holds a Master of Science in Healthcare Administration from Trinity University, along with a Master of Business Administration degree with an emphasis in finance, and a Bachelor of Business Administration degree in finance from Texas Tech University.

Walker is a member of the American College of Healthcare Executives and a 2013 inductee to the Garland Sports Hall of Fame for tennis.

Chief Operating Officer

Ken Stevens joined Medical City Lewisville as chief operating officer in June 2023.

As COO, Stevens provides leadership and direct administrative oversight of strategic planning for business development and project management resulting in service growth, improvements in patient outcomes and advanced patient and physician satisfaction.

A proven leader, Stevens served previously as vice president of operations at Medical City Frisco since 2020. There he provided operational oversight of ancillary functions, construction and real estate, which included the build and opening of a $91 million patient tower in 2022. Stevens also oversaw many of the hospital's services including cardiology, general surgery/colorectal and bariatric services, among others. Stevens began his career with Medical City Healthcare in 2011 as a financial analyst at Medical City Arlington before a return to supply chain and operations.

Stevens holds a Master of Health Care Administration from The University of Texas at Arlington and a Bachelor of Arts in Economics from Texas Tech University.

Chief Nursing Officer

Emily Sneed, MSN, RN, PCCN, NEA-BC, was named chief nursing officer (CNO) for Medical City Lewisville in November 2023. In this role, Sneed oversees the nursing practice and operations for all facility nurses and ancillary care services.

Prior to this role, Sneed served as ACNO of Medical City Plano since June 2022. She began her HCA Healthcare career as a registered nurse at Medical City Plano in 2009. She has served in progressive leadership roles, including nurse educator, assistant nurse manager, nurse manager and nurse director.

Sneed earned a Master of Science in Nursing from Grand Canyon University and a Bachelor of Science in Nursing from Missouri State University. She has been awarded the D Magazine Excellence in Nursing Award and recognized as a DFW Great 100 Nurse.

Chief Financial Officer

Rhonda Boots was named chief financial officer (CFO) of Medical City Lewisville in Oct. 2024.

In this role, Boots oversees several departments, including finance, patient access, health information management, case management, rehabilitation, revenue integrity, IT&S and supply chain.

With more than two decades of financial leadership experience, Boots served previously as the interim CFO of HCA Healthcare's Good Samaritan Hospital in San Jose, CA, and as the ACFO of HCA Healthcare's Sunrise Hospital in Las Vegas, NV, since February 2022. In these roles, she helped lead accounting processes and capital projects, including project development for freestanding emergency departments, among other responsibilities. Boots began her finance career in 2000.