Dr. Tereasa Ballay was born in Virginia and spent her early childhood in Nebraska. At the age of 9, she moved to Arlington, Texas where she later graduated from High School. She graduated from Texas Women's University with a major in Chemistry and a minor in Biology. She became a doctor in 1997, graduating from the University of Texas Medical Branch in Galveston. Residency followed at Scott and White Memorial Hospital in Temple, Texas.

Dr. Ballay became Board Certified in Pediatrics in October, 2000. Since that time, she has practiced in 2 different pediatric offices in East Texas. The family moved to Georgia in 2005 and she joined ABC Pediatrics that summer. Dr. Ballay is married and has 2 girls. She enjoys spending time with her family, traveling, swimming, skiing, scrap-booking, and photography.

Dr. Ballay has enjoyed opportunities to participate in community service including Diabetes Camp for Youth, and a mission trip to Mexico.