How would you design a data model to accommodate an Account Hierarchy?

Account Hierarchy Data Model Design:

How would you design a data model to accommodate an Account Hierarchy? There are many ways to do this - all that have various implications. Pick one and indicate why you chose this design over other designs. Please also do this in PowerPoint.

Here is an example of an account hierarchy:

- Hospital System - Kaiser

- Hospital - Kaiser South San Francisco

- Department - Cardiology

- Doctor - Dr. Smith

- Doctor - Dr. Kallman

- Doctor...

- Nurse...

- Nurse...

- Receptionist...

Note that healthcare providers can belong to multiple locations. For example, some may work out of Kaiser at South San Francisco on some days, and San Mateo on others. Some might have private practices on the side, so there can be different levels of the hierarchy.