Troy A. Villarreal, FACHE


As president of HCA Healthcare’s Gulf Coast Division and HCA Houston Healthcare, Troy A. Villarreal is responsible for the management and operations of hospitals, emergency and surgical centers, and diagnostic facilities from Conroe to Texas City, as well as Houston to Corpus Christi and south Texas.

He was appointed to his current position in July 2016 after serving as chief executive officer of Medical City Dallas Hospital and chief executive officer at The Medical Center of Plano, both part of the HCA Healthcare system.

As president of HCA Healthcare’s Gulf Coast Division and HCA Houston Healthcare, Villarreal has been responsible for major facility upgrades, significant growth, and increased patient, physician and employee satisfaction at numerous HCA Healthcare hospitals.

He earned his bachelor’s degree in psychology from Texas A&M University and master’s degrees in healthcare administration and business administration from the University of Houston-Clear Lake. He is a fellow in the American College of Healthcare Executives and serves on the UHCL Healthcare Administration Executive Advisory Board, the Texas Hospital Association’s Council on Policy Development Board and the Greater Houston Partnership Board.

Villarreal is a graduate of Leadership Plano Class 27, having served on the organization’s executive committee board, strategic planning committee and alumni committee. He also served as campaign cabinet chair for the Plano Chamber of Commerce and as an advisory board member of the United Way of Greater Dallas.

Jeffery L. Silwinski

Chief Financial Officer

Jeffery L. Silwinski was appointed CFO in May 2012. Previously, he served as CFO of HCA Houston Healthcare Clear Lake and HCA Houston Mainland, a campus of HCA Houston Clear Lake.

Silwinski has held various financial roles in healthcare, having served as CFO at The Woman’s Hospital of Texas and controller of the HCA Healthcare’s Gulf Coast Division. His prior experience also includes financial positions at Baptist Memorial Healthcare System in Memphis, Tennessee and The Children’s Hospital of Buffalo, New York.

Silwinski earned a bachelor’s degree in business administration with a concentration in accounting from the State University of New York at Buffalo. He serves on the Northern Brazoria County Education Alliance Board of Directors and is treasurer of the Pearland Independent School District Booster Club.

Stephen W. Nesbit DO, MBA

Chief Medical Officer

Dr. Stephen W. Nesbit was appointed CMO in December 2014. He oversees all clinical and quality services across the division and HCA Houston Healthcare. Previously, Nesbit served as CMO and chief quality officer for Via Christi Health, the largest provider of healthcare services in Kansas.

Nesbitt has more than 30 years of experience as a board-certified family medicine physician. For the last 18 years, he has focused on physician executive roles with senior management responsibilities for quality, medical management, resource management, credentialing, physician recruitment, service line operations and medical staff affairs.

After receiving bachelor’s degrees in business administration and biology from Lamar University, he earned a doctor of osteopathic medicine degree from The University of Health Sciences in Kansas City, Missouri. He also possesses a master’s degree in business administration from The University of Houston-Clear Lake and is board certified by the American Osteopathic Board of Family Physicians.

Kelli Nations, MHA, BSN, RN, NE-BC

Chief Nurse Executive

In 2016, Kelli Nations was named the first CNE in HCA Healthcare's Gulf Coast Division and HCA Houston Healthcare.

In this capacity, Nations is responsible for nurse and physician collaboration and service initiatives including patient experience, nursing recruitment and retention, and nursing management development.

For 14 years, she served as a nursing leader at HCA Houston Healthcare Clear Lake,Conroe, Southeast, and Mainland.

Nations holds both a bachelor’s degree in nursing and a master’s degree in healthcare administration from Texas Woman’s University in Houston. She is certified through the American Nurses Credentialing Center as a Certified Nursing Executive, Advanced and is currently pursuing a doctorate in business administration with leadership development from Northcentral University, a doctoral research institution.

Jose A. Perez Jr., M.D.

Vice President of Graduate Medical Education

As vice president of Graduate Medical Education, Dr. Jose A. Perez, Jr. focuses on strategy and development for HCA Houston Healthcare.

Prior to joining HCA Healthcare's Gulf Coast Division in March 2018, Perez served as vice chair of education and internal medicine residency director for programs associated with Houston Methodist Hospital’s Weill Cornell School of Medicine.

He has more than 25 years of experience in medical education in addition to his time in clinical practice as an internist.

Perez is a fellow of the American College of Physicians and the American Board of Quality Assurance and Utilization Review physicians. He also is a diplomat of the American Association for Physician Leadership and the former president of the Texas chapter of the American College of Physicians and the Hispanic American Medical Association of Houston.

Perez graduated from the Universidad de Monterrey Medical School in Mexico before completing additional clinical training at New York Medical College and a residency in internal medicine at Waterbury Hospital, affiliated with Yale University School of Medicine, and at Kern Medical Center in Bakersfield, California where he also served as chief resident.

He holds a master’s degree in medical education from the University of Southern California and a MBA from the University of Massachusetts, Amherst.