Please help - User Access

Is there a way in piwik to know what profiles does a particular user have ? instead of going to each and every profile under user tab and checking his/her access ? …we have like 250+ sites and I want to check for a user what all profiles he has access to … Is there a simple way to do that ?

from the UI it is not possible, but you can do this from the API using SitesManager.getSitesWithAtLeastViewAccess with the token_auth of that user.

http://developer.piwik.org/api-reference/reporting-api#SitesManager