Call from unrecognized number 314-522-5700 claiming to be a Express Scripts team with message to call 877-887-2855 and use my phone number as reference. Sounds suspiciously dangerous. I'll pass.
This is a legitimate call from Medco/Express Scripts! I was suspicious at first, but it turned out to be legit! I called the 877-887-2895 back to see for myself and it is a legit number!