Dr. Hollabaugh is from St. Louis, Missouri. He attended Marquette University for undergraduate studies and then received his medical degree from the Medical College of Wisconsin. He completed pediatrics residency at Vanderbilt University, and a two-year fellowship in pediatric and adult primary care sports medicine at Vanderbilt University. Dr. Hollabaugh served as an Assistant Professor at Vanderbilt University in the Department of Orthopaedics, Divisions of Sports Medicine and Pediatric Orthopaedics. During his time at Vanderbilt, he participated in the medical education of medical students, residents and fellows, and published research articles on topics including lower extremity muscle (hamstring, quadriceps) strains, spondylolysis/spondylolisthesis, vitamin D status in athletes, cardiovascular disease in athletes, thoracic outlet syndrome, orthobiologics and Name, Image and Likeness policy.