Jim Russell

Chief Executive Officer

Jim Russell is the chief executive officer at HCA Houston Healthcare Mainland. As an administrative leader, he oversees physician relations, business development and strategic planning for all areas of the facility.

Russell previously served as chief operating officer at HCA Houston Healthcare Clear Lake, The Woman's Hospital of Texas, and Medical City Lewisville. He also served in leadership roles at Denton Regional Medical Center and earned the distinction of board certification in healthcare management as a Fellow of the American College of Healthcare Executives.

Russell earned a Bachelor of Science in Nursing and later graduated with a Master in Business Administration from Texas Woman's University in Denton, Texas.

William Killinger

Chief Medical Officer

William Killinger, MD, is the chief medical officer (CMO) at HCA Houston Healthcare Mainland.

Prior to joining HCA Houston Mainland, Dr. Killinger was the CMO at Medical Center of Trinity, an HCA West Florida Division hospital. He was in private practice for 27 years in Raleigh, North Carolina, as a cardiothoracic surgeon and served as a guest editor for The Annals of Thoracic Surgery and The Heart Surgery Forum®.

He also served as the vice chairman and chairman of the department of surgery at WakeMed Health and Hospitals in Raleigh. Dr. Killinger was medical director of the cardiothoracic surgery intensive care unit, and in 2016 was appointed medical director of the cardiovascular and thoracic surgery programs at WakeMed Health and Hospitals.

Dr. Killinger graduated from Emory University in Atlanta, Georgia, and the University of Virginia School of Medicine and received his master's degree in business administration from Brandeis University in Boston, Massachusetts. After completing general surgery at The University of North Carolina at Chapel Hill, he trained in cardiothoracic surgery at the University of Pittsburgh and then served as a clinical associate staff member at the Cleveland Clinic for three years.

Natalie Pack

Chief Financial Officer

Natalie Pack serves as the Chief Financial Officer (CFO) of HCA Houston Healthcare Clear Lake and HCA Houston Healthcare Mainland.

From 2019-2021, Pack served as the vice president of finance for the HCA Gulf Coast Division from. During her tenure as the Division VP, she supported HCA Houston Healthcare Medical Center as its interim CFO and chief staffing officer. She is an HCA veteran and has held leadership roles at St. David’s North Austin Medical Center in Austin, Texas, Medical City Plano in Plano, Texas, and Sunrise Hospital and Medical Center in Las Vegas, NV.

Pack holds a bachelor’s degree in accounting from Christian Brothers University in Memphis, TN, a master’s degree in accounting from the University of Memphis in Memphis, TN, and a master’s degree in healthcare administration from the University of Florida in Gainesville, FL.