Hi..

I currently have multiple SSID's in my network. I'd like to create an NPS network policy that the condition is met based upon the SSID that the user is on.. 

Example: If a user is on SSID1 they would get this policy. If a user was on SSID2 they would get this policy. 

Or, do I have to create a separate NPS server for each SSID that I want a different condition for??

If it helps, I'm running Windows 2008 R2 Domain Member Server with NPS.

Hi,

According your description, it seems to use the called station id met your scenarios.
The similar thread:

NPS Authentication
http://social.technet.microsoft.com/Forums/windowsserver/en-US/fa662135-3ddd-4699-a8eb-83f9f85b5674/nps-calledstationid-regex-pattern

The related third party thread:
Two SSID's using 802.1x authentication with same Radius server
http://community.arubanetworks.com/t5/Authentication-and-Access/Two-SSID-s-using-802-1x-authentication-with-same-Radius-server/td-p/39038

Multiple SSID authentication with NPS
https://supportforums.cisco.com/thread/2217685

Hope this helps.