AIM: The study aim was to investigate the effect of the 2024 Noto Peninsula earthquake on regular psychiatric outpatient check-ups at Kanazawa Medical University Hospital, Japan. METHODS: We retrospectively collected electronic medical records from January 4 to January 17, 2024, and analyzed data from 656 patients. RESULTS: Of the 656 patients, 572 (87.2%) adhered to their scheduled visits. The failure to keep appointments was significantly associated with residence in areas with a seismic intensity of ≥6 ( CONCLUSION: Patients in areas with higher seismic intensity were more likely to miss appointments, probably because of factors such as infrastructure damage and personal losses. Among patients who missed appointments, those with F3 diagnoses were more likely to cite earthquake-related reasons. However, the high overall appointment adherence rate despite the effects of a major earthquake warrants further study.