Colonel Joseph Brennan is an ENT-otolaryngologist in Lackland A F B, Texas and is affiliated with multiple hospitals in the area, including Central Texas Veterans Healthcare System and South Texas Veterans Health Care System. He received his medical degree from Tufts University School of Medicine and has been in practice for 29 years. He is one of 4 doctors at Central Texas Veterans Healthcare System and one of 10 at South Texas Veterans Health Care System who specialize in Otolaryngology.