Adding permissions for content pages to different tyes of users

Hi,

I've two types of users on my website:

1. Consumer
2. provider

I've added those two types by adding user roles from back-end by going to:
User Management=>Roles

Then i added permissions for different modules to those two types of users.

Now , the issue is that there are certain pages(content type-page) on my website that consumer cannot access if the user has logged in as provider and similarly provider cannot access some consumer pages if he has logged in as provider.

How can i add permissions for those pages?

Please help me out!

Thanks,
Kul.