Hello Luis, welcome to the Seven Forums.
I would do this with
Saved Searches.
Save all patient information as you had planned, each patient having own folder with all relevant information. Name each main (patient) folder using sort options you need to use as for instance
John Doe - Dr. Kildare - Stroke (patient - doctor - diagnosis).
Now create
Saved Search links. To search all stroke patients, open the folder containing all patient folders and type
type:folder filename:stroke to search field. When search is done, click
Save Search:
Now you you have a link to all folders of stroke patients:
Do the same with all sort criteria you need to. Saved searches appear on the left pane of Explorer window, on top under the title
Favorites.
Kari