Design Phase - Conceptual Model

My Project is an Appointment Scheduling System for a Treatment Centre,  I won't be posting the name of the institution. Legal Issue - People who receive treatment at this institution may assume that I am using their information in my project.

I am just about finishing transferring the conceptual model from paper to digital via visio 2003. I am not quite finished just yet since  I was building the tables in the prototype concurrently to use time wisely, so I am seeing more entities to model at the conceptual level.

Hopefully, this should be close to the actual site minus the email daemon. This is incomplete.