This report provides a comprehensive overview of Electronic Health Record (EHR) implementation, adoption, optimization, and the migration path within clinical settings. It begins by highlighting the benefits of EHRs, such as improved healthcare quality and reduced costs. The report details the systematic transformation from paper-based records to EHRs, emphasizing the importance of workflow analysis, patient portals, and adherence to regulations like the HITECH Act. It explores the structure of EHRs, including patient management systems, clinical elements, and coding/billing systems. The report also examines workflow redesign in the Department of Internal Medicine, covering processes from appointment configuration to patient discharge. Furthermore, it emphasizes the benefits of patient portals in enhancing patient engagement and decision-making. The report concludes by underscoring the need for usability testing and personalization of patient portals to meet evolving healthcare requirements. This report is a valuable resource for understanding the multifaceted aspects of EHR systems and their impact on healthcare delivery.