I get these calls almost daily and I never answer. We DO use Medco so I am not sure of the validity of the calls, but today I pressed 'talk' to see if I could actually talk to a real person. After about 20 seconds of the robo trying to connect me, it hung up. So since the federal DoNotCall does not seem to work, I am using all of the technology available to combat this caller (and others). My Panasonic phone system has a built-in caller block that you can block the number with only a few keystrokes. That is the best that any of us can do since the government and phone companies are unwilling to help John and Jane Doe in this blatant form of phone and privacy abuse.
I keep getting calls from this number. My phone ID says New Jersey. I finally called and spoke to someone. I asked a lot of questions to make sure this really was Medco. Apparently they were calling to tell me some prescriptions were about to be filled. I told them to quit calling me and send me email instead. What an annoying business practice to call and call and not leave a message.
Got two calls from this number at it is late at night. They say they part of Medco and started asking for personal info. Did not give them any of it. It'd fraudulent.