About Nancy G Marquez

Dr. Marquez is a board-certified general surgeon who has received advanced training in specializes in laparoscopic surgery, including laparoscopic colectomies, Nissen fundoplications and weight loss surgery procedures. She employs the latest techniques in the surgical treatment of breast diseases including stereotactic breast biopsy and sentinel node biopsy techniques.

Dr. Marquez performs laparoscopic adjustable gastric banding, gastric bypass, sleeve gastrectomy, StomaphyX, and revision procedures for the treatment of chronic obesity. After a rigorous examination of her surgical outcomes and practice, she was awarded the distinction of being an ASMBS Bariatric Surgery Center of Excellence Surgeon.

Dr. Marquez graduated with highest honors in psychology and chemistry from the University of Texas at El Paso. She received her medical degree from Baylor Medical School in Houston and was a surgical resident at Baylor University Medical Center in Dallas. Dr. Marquez was an assistant professor in surgery at Louisiana State University in New Orleans where she managed the surgical oncology clinic. She is a Fellow of the American College of Surgeons, a member of the American Society of Breast Disease, the Texas Medical Association. She is a Fellow of the American Society for Metabolic & Bariatric Surgery (ASMBS).

Dr. Marquez also serves as a volunteer for the Breast Cancer Resource Center and has severed on numerous hospital committees.

Dr. Marquez us bilingual, speaking both English and Spanish. She has lived in Austin since 1994. Dr. Marquez is married and has two children. For her, exercise is a way of life and includes running, cycling, and working out in the gym. She gets off the beaten path on horseback and cross-country motorcycles. She shares a love for the arts with her artist husband and playing the piano with the accompaniment of her children on violin and flute.


Medical School
Baylor Medical School, Houston, TX

Certifications & Memberships

General Surgery




Robotic Surgery
Bariatric Surgery
General Surgery

Office Locations

Southwest Bariatrics
3705 Medical Parkway
Suite 250 and 210
Austin, TX 78705
Phone: 512-338-5024