Rene Perez, M.D.



Dr. Rene Perez attended the University of Baylor in Waco, TX and obtained a Bachelor of Science in Chemistry and minored in Biology & Environmental Studies in 1999.  He received his Doctorate of Medicine from the University of Texas Health Science Center at San Antonio in 2003. He then attended residency in Obstetrics & Gynecology at University Hospital in San Antonio and completed his training in June 2007.  He is an active member of Bexar County Medical Society, Texas Medical Association and the American College of Obstetricians and Gynecologists. He is a full scope OB/GYN doctor with the distinction of training in the ACESSA procedure and is a robotically trained surgeon. Dr. Perez is a Fellow of the American Congress of Obstetricians and Gynecologists and is Board Certified in his field of medicine.

Jenna Banner, M.D.


 Jenna Nicole Banner MD is a practicing Obstetrician and Gynecologist in San Antonio, Tx. Dr. Banner attended the University of Texas in Austin graduating with Honors-Summa Cum Laude in 2008. She went on to attend the University of Texas Health Science Center School of Medicine in San Antonio, Tx. graduating at the top of her class in 2012.   Dr. Banner successfully completed the Obstetrics and Gynecology Residency program in 2016 at University Hospital in San Antonio.  She is presently employed with Alamo Women’s Obstetrics and Gynecology in San Antonio, Texas. In her spare time Dr. Banner enjoys her time with her two boys, traveling and outdoor sports and activities. 

Vivian Ahn, M.D.


Dr. Ahn was born in San Francisco, California but raised most of her childhood in “The Valley” (McAllen, Texas). She received her Bachelor of Arts in Biology from St. Mary’s University in San Antonio in 2005. She was involved in research at the University of Texas Health Science Center in San Antonio in the Infectious Disease Department for four years during that time. She subsequently earned a Master of Science in Interdepartmental Medical Science at Drexel University in Philadelphia, PA. She then went on to earn her Doctorate of Medicine from Texas Tech University Health Science Center in Lubbock, TX. She completed her residency training in Obstetrics & Gynecology at the University of Texas Health Science Center in San Antonio. Her clinical interests include pelvic floor reconstruction and minimally invasive surgery. 

Carla Barba, WHNP-BC, APRN


  Carla is a nationally certified  Women's Health Nurse Practitioner.  She began her career as a registered nurse in California in 1999.  She went on to train as a labor and delivery nurse and completed five years at the labor and delivery department . Carla went on to complete her training as an Advanced Women's Health Nurse Practitioner in 2005. She has successfully completed her MSN degree and has been certified in colposcopy (procedure for treatment of abnormal pap smear). She is dedicated to continuing to advance her knowledge and providing exceptional patient care. She has been an integral part of our team since 2010.  

Maisey Grief, CNM, MSN, RN, APRN


   Maisey is nationally certified as a Nurse-Midwife. She is a native Texan and knew she wanted to become a midwife when she was just 9 years old while observing her mother’s midwife. In 2014, she earned a Bachelor’s of Science in Allied Health with a minor in Biology from Texas A&M University in College Station, Texas and then went on to earn a Bachelor’s of Science in Nursing from Texas A&M Health Science Center. She received her Master’s of Science in Nursing from Vanderbilt University in Nashville, Tennessee, and finished clinical rotations in high volume urban hospitals as well as low resource community health centers. During her clinical studies as a midwife, she became passionate about the use of nitrous oxide for pain relief in labor, as well as the integration of hydrotherapy to facilitate a woman’s coping skills in labor. Her clinical interests include the long-term health implications of Cesarean sections and autoimmune disease. She is excited to serve alongside the excellent practitioners at Alamo Women’s Obstetrics and Gynecology and is eager to support women and their families throughout all stages of life.