There are a couple of ways to get this information, if you are truly worried (though your company, by law, is not allowed to release your information to anything but the MIB).
The first way is to simply ask your insurance company agent.
You can also go to the MIB website (www.mib.com).
Or, finally, you can contact MIB directly, either by mail or phone. Their address is:
P.O. Box 105
Boston, MA 02112
And their phone number is:
These places will give you lots of information on the way that they will use your medical information. They will even show you a sample report and tell you how you can acquire a copy of your own report, if it even exists.