In this study, we investigated predictors of utilization of physician, hospital, and emergency room services in a sample of 277 elderly patients during the first year following a diagnosis of lung cancer. Data were obtained by a combination of patient interview and patient self-administered questionnaire at four intervals: baseline (wave 1), 3 months (wave 2), 6 months (wave 3), and 12 months (wave 4). Of the 277 patients, 242 provided data at wave 1, 209 at wave 2, 157 at wave 3, and 115 at wave 4. Symptomatology was assessed with the Symptom Experience Scale (simple count of symptoms present, chosen from a list of 37 cancer-related symptoms), and physical functioning was assessed with the Medical Outcomes Study 36-Item Short Form Health Survey. Analysis of covariance models were implemented separately for the active treatment period (0-6 months) and the continuing care period (6-12 months) to determine how age, gender, comorbidity, length of survival, treatment status, stage of disease, cancer site, physical functioning, and symptom count were related to physician visits, nights in hospital, and emergency room visits. During the active treatment period, patients with worse physical functioning reported more hospital nights (p=0.002) and more emergency room visits (p=0.013), while men reported more frequent emergency room visits (p=0.032) and more nights in hospital (p=0.006) than women. Patients reporting more symptoms also reported more physician visits (p=0.020). During the continuing care period, physical functioning had a similar relation to hospital nights (p=0.005) and emergency room visits (p=0.003), and patients with late-stage disease reported more physician visits than patients with early-stage disease (p=0.003).