The nation's oldest and largest freestanding emergency room system.

Locations » San Antonio Area » San Antonio - De Zavala Rd.

Sa De Zavala 1500 710
First Choice Emergency Room

San Antonio - De Zavala Rd. LOCATION


12805 W. I-10

San Antonio , TX 78249


Open 24 Hours


(210) 957-3030


First Choice Emergency Room is the nation’s leading freestanding emergency room system; it is both largest and the oldest. First Choice Emergency Room facilities are innovative, freestanding, and fully equipped emergency rooms with state of the art diagnostic technology (CT Scanners, Ultrasound, Digital X-ray) and on-site labs. All First Choice Emergency Room locations are exclusively staffed with board-certified emergency physicians and emergency trained registered nurses.

Our San Antonio - De Zavala Rd. ER is located in the northeast corner of northbound I-10 Frontage and De Zavala Road.


Corey Harrison, MD

Dr. Harrison received his medical degree from SUNY at Buffalo School of Medicine and Biomedical Sciences in Buffalo, NY. He completed his residency and fellowship for emergency medicine at the University of Massachusetts in Worcester, MA. Prior to joining First Choice Emergency Room, Dr. Harrison served as Assistant Medical Director of the Emergency Department at the University of Texas Health Science Center of San Antonio. He also served as an assistant professor of emergency medicine during his time at UTHSCSA. Dr. Harrison is board-certified in emergency medicine and has over 13 years practicing emergency medicine.