Insurance is a vital factor in the billed cost to the patient, but to what degree does insurance explain the amount a patient is left to pay? Also, does obesity further influence patient’s billed cost? This thesis assesses the type of thoracic trauma patient, insurance status, and their billed cost. Database variables were analyzed in IBM SPSS 25. Table 1 characteristics were evaluated based on demographics and systematic hospital factors. Linear regressions used Private0_Government1 and BMI Obese n_y_ as independent variables while Total Patient Cost was the dependent variable. Private0_Government1 insurance explained .03% of Total Patient Charges. Private0_Government1 and BMI Obese n_y_ explained 1.4% of Total Patient Charges. Private0_Government1 and BMI Obese n_y_ explained a low percentage of Total Patient Charges. This shows that there are factors other than insurance type and obesity that are influential upon patient charges.