Obstetrics/Gynecology Obstetrics/Gynecology 1501 W 11th Place Suite 200 Big Spring, TX 79720 432-264-7180 Phone: 432-264-7180 Fax: 432-837-0249 Hours: Monday - Friday: 8:00 am - 6:00 pm Erich Byerly, MD Jennifer Gray, DO Carylon Frerich, PA-C