The covered entity (CE), St. Vincent Health, mismailed letters about a closed practice, affecting approximately 63,325 individuals. The types of protected health information (PHI) involved in the breach included patients' names, addresses and, in some cases, information regarding upcoming appointments. Following the breach, the CE executed a business associate agreement with a new vender for its marketing and mailing initiatives and utilized new software for its marketing initiatives to provide additional accountability and controls. Additionally, the CE added more verification steps to its mailing process. The CE provided breach notification to HHS, affected individuals, and the media. OCR obtained assurances that the CE implemented the corrective actions noted above.