CallerID just had the city and number.  When I answered, got a voice claiming to be with "Bankers Life" - said something about their notes showing that my wife and I had not received our information about Medicare changes.  Claimed not to be selling anything, but clearly not affiliated with the government and clearly intended to sell insurance.  NOTE: They've been doing this since 2013 and this is not the only number they use or the first time this has happened.  See for example: http://800notes.com/Phone.aspx/1-719-268-1227  or  http://800notes.com/Phone.aspx/1-949-454-2104