Find A Doctor

Castro Pena, Alexandra MD

Board Certified Internal Medicine and Infectious Disease

accepting new patients Dr. Castro is a primary care physician and an infectious disease specialist.


Dr. Castro-Pena was born and raised in Bogota, Columbia. When she is not hard at work helping her patients, she enjoys going to concerts, salsa dancing and most importantly spending time with her beautiful one-year old daughter.

Why the medical field?

Since childhood, Dr. Castro-Pena has had a passion for helping others. Following her passion, she chose a career in the medical field so she could provide help to support a group of patients who are most in need.

Why Gonzaba?

Dr. Castro-Pena joined GMG in 2016. She chose Gonzaba because of the location of the clinics and felt a connection with the patients that they serve.


  • Pontificia Universidad Javeriana in Botoga, Columbia
  • University Health Science Center in San Antonio, TX


  • The Infectious Diseases Society of America

“I am always available to meet my patients needs”


Our Locations

Woodlawn Medical Center
902 Bandera Road
San Antonio,TX 78228