Executive Team


John T. Chapman

President and Chief Executive Officer

Mr. Chapman joined the hospital as Chief Operating Officer in October 2018 and was appointed President and Chief Executive Officer in May 2020. He is a microbiologist by training and previously served as Chief Operations/ Administrative Officer at Highland Hospital in Oakland, California.  He also led the clinical and support services for Alameda Health System in Northern California.

Wah-chung Hsu

Vice President and Chief Financial Officer

Mr. Hsu joined the hospital as Vice President of Finance and Chief Financial Officer in October 2012. He is responsible for all aspects of the hospital’s financial management and oversees patient access and financial services, managed care contracting, supply chain management, and other administrative functions.  Mr. Hsu has been in healthcare for over 25 years, and has served as CFO at hospital systems in northern California and New York.  

Gigi Dhillon, RN, CJCP, PhD

Vice President and Chief Nursing Officer

Ms. Dhillon has extensive leadership experience in diverse hospital settings, with more than thirteen years at the executive level.  Prior to joining San Antonio Regional Hospital in 2015, Ms. Dhillon was the Senior Vice President and Chief Nursing Officer for JFK Health in Edison, New Jersey.  In addition to her role as Chief Nursing Officer at San Antonio, Ms. Dhillon also serves as the hospital’s Patient Safety Officer.  

Kamal Pandya

Vice President and Chief Information Officer

Mr. Pandya joined San Antonio in 1996. Throughout his 24-year career at the hospital, he has held several important information technology positions. During his tenure, he has been instrumental in guiding the development and implementation of the hospital’s electronic health record system. Under his leadership, the hospital achieved the highest stages of the Federal Meaningful Use Program, ensuring San Antonio’s place at the forefront of healthcare information technology.

Cathy Rebman

Vice President and Chief Strategy Officer

Ms. Rebman is responsible for strategic and business development and oversees marketing and communications, public relations, physician relations and development, and community outreach. In addition to her hospital role, she provides leadership and support for a variety of community-based organizations promoting health initiatives throughout the region. Prior to joining San Antonio in 1986, she gained leadership experience at hospital systems in Colorado and Virginia.  

Debora Turner

Vice President and Chief Operating Officer

Ms. Turner oversees operations for a number of clinical and support services including, imaging, laboratory, pharmacy, rehabilitation services, facilities, environmental services, nutritional services, and security. She began her career at San Antonio as a radiology technologist in 1985. Since then, she has held a number of radiology and administrative positions including Director of Radiology.  Ms. Turner played an integral role in the development and opening of the Scheu Family Building and the Ambulatory Care Unit.

Sandra Wier, RN

Vice President and Chief Human Resources Officer

Ms. Wier is responsible for all human resources operations including talent acquisition and development, salary and benefit management, employee health services, and the hospital’s wellness program.  In her role, Ms. Wier develops and executes human resources strategies that support San Antonio’s mission, and its values and organizational culture. Prior to joining San Antonio in 2003, she was the Director of Human Resources at Riverside Community Hospital.


Michelle Stoddard

President, San Antonio Hospital Foundation

Michelle brings over 30 years of strategic leadership experience in healthcare and university philanthropy. For the last six years, she was the CEO for Emanate Health Foundation. Michelle has a successful track record in building donor relationships, fundraising, major campaigns, and assuring a diverse Foundation Board that represents the communities served. She earned her bachelor's degree in business administration at Cal Poly Pomona, and her master’s degree in leadership and management at the University of La Verne. She is an active member of many business organizations and has served as a volunteer on several nonprofit boards.