At SFGH it is common for a patient to be assigned several diffierent medical records and there is minimal efficiency with which information is merged into one record or that it is made clear a patient may have additional infomation (including testing and imaging results) under another medical record number.  This leads to expensive tests, and images potentially being repeated since providers are not aware the results are listed under a different medical record.  There are also clearly possible ramifications for patient safety as well.