united healthcare contracting update to : houston area employees participating in domestic medical plan benefits from : enron human resources we are pleased to pass along to you the fact that united healthcare ( uhc ) and memorial herman health systems ( mhhs ) reached agreement on a long - term contract . there will be no disruption in terms of accessing network services from the hospital system or those providers who were scheduled to be terminated . employees currently electing uhc will receive a confirming letter shortly from uhc . as mentioned in our earlier memo , it is our understanding that cigna has also been contacted by mhhs and are now in contract negotiations . open enrollment packages are in the mail and you should consider the above facts when making your decision on your medical election .