I would appreciate the comments of those experienced with this CMS with respect to its suitability for a project I must implement.

Consider a CMS implementation for a hospital. There would be a general page of news, general forums, etc. But, each area would also have a private area: doctors with their own news and forums, nurses with theirs, etc. Additonally, each of the general and private groups might have their own procedures manuals. It would be up to the administrator of each private group as to whether content would appear in the general group.

In other words, I am seeking what boils down to multiple private CMS systems for each hospital area, but which are tied together by common user registration facilities and general news, manuals, faqs, forums, and acccess by all to the non private parts of the system.

Additionally, can users create their own private pages of content and then determine if the information is public of private?

Is Drupal suited to the task? It appears that the "collaborative book" features might be just the ticket.

Thank you.