Objectives: Transitional care clinics (TCCs) represent one strategy to facilitate follow-up and primary care linkage for patients with no regular source of care who are discharged from the emergency department (ED). We assessed factors associated with completion of TCC follow-up among these patients and characterized their subsequent ED use. Methods: Retrospective study of 660 randomly sampled patientswith a scheduled appointment to a TCC at time of ED discharge. Patient-and visit-level characteristics were abstracted from the medical records of these patients and linked to a state visit database to characterize ED use after referral. Multiple logistic regression was used to determine factors associated with completion of follow-up and subsequent ED utilization. Results: Half (50%) of the patients completed their follow-up appointment with a mean follow-up time of 6.9 days. Non-English language (odds ratio [OR], 2.21; confidence interval [CI], 1.30-3.75) was the only factor associated with improved follow-up; however, patients who were homeless (OR, 0.42; CI, 0.26-0.66) had a substance use history (OR, 0.68; CI, 0.45-1.00), and those with more baseline ED visits (OR, 0.94 per additional ED visit; CI, 0.89-0.99) were significantly less likely to complete follow-up. After adjusting for demographic, clinical, and visit-level characteristics, patients who completed their appointment had significantly fewer ED visits in the subsequent year compared to patients who did not complete their appointment (mean, 2.3 vs 3.3 visits; difference, -1.0 visits in subsequent calendar year; CI for difference, -1.2 to -0.7). Conclusion: Transitional care clinics represent a promising strategy to improve the continuity of care for emergency patients and may reduce unnecessary ED use. Published by Elsevier Inc.