Dr. Brad Mercer grew up in Fort Worth and attended Brewer High School. He earned his undergraduate degree from Texas A&M University and his medical degree from the University of Texas Health Science Center in Houston. He completed his residency at Texas A&M/Scott and White Hospital in Temple, Texas.

Dr. Mercer joined Cook Children's Physician Network and has been a board member for the Cook Children's Physician Network, Cook Children's Health Care System and Cook Children's Health Plan, as well as the Tarrant Country Academy of Medicine and Fort Worth Academy school board. In 1995 he became board certified in pediatrics. He is a past president of the Fort Worth Pediatric Society and a fellow of the American Academy of Pediatrics. Dr. Mercer and his wife have two high school-aged children. His hobbies include traveling, camping, hiking, cycling and running.