Just got a call from this number, an automated voice message was left after I ignored the call since I didn't recognize the number. The message says it's from United Healthcare giving me a number to call and a security code to do some sort of survey to make sure my claims are paid on time. I'd rather wait and see if they call back with a human before I go answering any personal questions to a machine.

Could be legit, could be a phisher.

It's legit.  Just call the number so that UHC can verify whether you or your spouse have any other insurance coverage that may apply to a portion of your pending claim(s).

Yes, it is a legitimate robo call from United Health Care.  The problem is that their system is so screwed up all you hear is a garbled tape message.  Call them back and give them the info they need.  They are checking to see if you have any other insurance so they can stop honoring your claims.

Called the UHC # on their web site and were told this call was a scam. They never contact people with an ID number to call back Told to call 877-828-5737