Originally from San Diego, McCague completed his fellowship in Surgical Critical Care at the University of California at Irvine Medical Center.  McCague also completed his General Surgery residency training at Arrowhead Regional Medical Center, a county hospital in Colton, California.  During residency he served as Chief Resident, as well as earned awards for excellence in resident achievement.  He is a graduate of the University of Medicine and Dentistry of New Jersey, School of Osteopathic Medicine in Stratford, New Jersey.