Objective The goal was to determine the effects of specialty training and practice settings on the adherence to the Pediatric Emergency Care Applied Research Network (PECARN) criteria. Methods A retrospective study was conducted on a 2-campus hospital. Chart documentation was used to determine adherence to PECARN criteria. Inclusion criteria were any traumatic head injury within 24 hours in patients younger than 18 years over a 1-year period. Specialty training was subdivided into 3 groups: pediatric emergency medicine, emergency medicine (EM), and general pediatrics. The 2 hospital campuses are distinctly different practice settings, one being an academic practice setting, which is also a trauma center that has a dedicated pediatric emergency department, staffed by pediatric emergency medicine, EM, and general pediatrics physicians, and the second campus is a community practice and is staffed solely by EM physicians. Statistical analysis was performed using χ2 and Cochran-Mantel-Haenszel tests. All analyses were 2-sided, and P < 0.05 was considered statistically significant. Results A total of 709 pediatric patients with traumatic head injuries were analyzed. Overall adherence to PECARN criteria was 93%. No statistical difference was found between different specialty training on the academic campus. In addition, the rate of adherence among EM physicians at the academic and community settings was 94.8% versus 86.5%, respectively (P = 0.004). Conclusions Practice setting had an effect on adherence to PECARN criteria in pediatric patients with acute traumatic head injury. The same determination on adherence was not demonstrated among physicians with different specialty trainings.