Fast Healthcare Interoperability Resources (FHIR) is gaining popularity as a standard framework for the exchange of electronic health record (EHR) data. Despite the advantages of FHIR, it is difficult for clinicians to understand the data in EHR. To support clinicians in accessing data about a patient, we created a pipeline that extracts, transforms, and visualizes patient data from FHIR. We employ a web-based timeline visualization that shows all clinical data recorded for the patient over their disease trajectory. This can help clinicians to use the patient data more efficiently and to get a clear picture of the patient’s disease progress and physical condition more quickly, which could help them to develop the best treatment plan for their patients. The source code with an example synthetic, but realistic patient is available at https://github.com/rtg-wispermed/Patient_trajectory_public