Alexis Mussi
Chief executive officer

Alexis Mussi was appointed Chief Executive Officer of Southern Hills Hospital and Medical Center in May 2019. In her role, Alexis oversees and is responsible for Southern Hills Hospital and Medical Center, which includes an 80 bed behavioral health unit, the Pavilion, as well as the free standing emergency room, ER at the Lakes. Previously she served as Chief Operations Officer of Southern Hills Hospital and Medical Center. Alexis has been with HCA since May 2008.

Alexis holds a Bachelor's Degree in Interdisciplinary Studies in Business and Communication from Arizona State University, and earned her Master of Public Administration Degree from the University of Nevada Las Vegas.


Cullen Brown
Chief operations officer

Cullen Brown was appointed Chief Operations Officer of Southern Hills Hospital and Medical Center in July 2019. In his role, Cullen oversees the operations of the emergency, department, surgical services department and other areas of the 246 bed facility. Before coming to Southern Hills Hospital, Cullen served as the Vice President of Operations at Los Robles Medical Center, an HCA Far West Division Facility in Thousand Oaks, California.

Brown studied economics at Southern Methodist University in Dallas, Texas. From there he moved to Richmond, Virginia and received his Master in Health Administration from Virginia Commonwealth University.


Sonia Baughman
Chief financial officer

Sonia Baughman joined Southern Hills Hospital and Medical Center in January 2022 as chief financial officer. Sonia's oversight includes all financial activities, such as budgeting, forecasting and planning. Sona joins Southern Hills from the HCA facility in Summerville, Southern Carolina. 

Sonia earned her bachelor's degree in Professional Accounting, her master's degree in Business Administration, and her master's degree in Accountancy, all from the University of West Florida in Pensacola, Florida. 


Blake Romero
Chief nursing officer

Blake Romero was appointed Chief Nursing Officer of Southern Hills Hospital and Medical center in August 2020. As CNO, Blake has executive oversight for all nursing and surgical operations.

Prior to Romero's position at Garden Park he served as Associate Administrator for Nursing Services at Baylor Scott & White Medical Center in Dallas, Texas. Romero received a Bachelor of Science in Nursing from Excelsior College in Albany, New York and a Master of Science in Nursing Leadership and Management from Western Governors University.


Dr. Bill Fernandez
Chief medical officer

Dr. Bill Fernandez joined Southern Hills Hospital and Medical Center in November 2021 as chief medical officer. Dr. Fernandez is a board-certified emergency physician with more than 20 years of experience. Dr. Fernandez plays a vital role in developing strategies while working with physician leaders to advance healthcare in the Las Vegas community. Dr. Fernandez earned his doctorate in medicine from the University of California, Davis, and completed his post graduate training in emergency medicine at NYU Medical Center. He is currently adding to his academic achievements, a master's degree in Business Administration, from Isenberg School of Management. Dr. Fernandez also has a distinguished 20-year career in the U.S. Navy Reserves. He is a veteran of the war in Afghanistan, where he served as a trauma team leader.