800-753-2851

They're not trying to sell you a drug. They're contracted by your insurance company for drug coverage and it's a courtesy call letting you know whether the drug you tried to fill (at your preferred pharmacy) is covered or not.

Surprisingly, in all the time I have had insurance, I have never ever received a phone call from either Express Scripts or CVS Caremark.  I have always received a letter in the mail telling me whether it was approved or not and how to appeal the decision.  The reason they do that is that it is required by law to protect your health.  So, oops, looks like you must be one of the scammers making these calls.

The number is from my Medicare prescription plan about a preauthorization. My doctor took care of it. But, the caller should have left a message of some sort.

Call from 800-753-2851. Answered and got a recorded message. It was a legitimate business call.
Caller: Express Scripts.
Automated Information call from Express Scripts

I just love it when scamming scum like you show up trying to convince people these calls are legitimate.  You always fail so miserably.

Just got a call from this number and they left an automated message, it is not Express Script and related to pre-authorization for medication.

They record your voice saying ‘yes’ and use it as an authorization to use your credit information. Be very careful

This number is for Express Scripts. A prescription coverage company. If your prescription drug coverage is under this company, that is why they are calling.

Pick up it's about your prescriptions.

Was calling 3 times in 10 minutes

If it's a company that you have done business with in the past, they can call you even if you are on the do not call registry.

This number called & left no message, Feb 14, 2019. I’ve received calls from Medco before (since everyone else is mentioning them) about a Rx that was filled & they need me to call back with info. I did once & they wanted to confirm info. I got the distinct impression that they were a scam, though. It was very weird. And now, I don’t even have Medco as drug insurance, haven’t for some time, so they should have no reason to call me anymore. So that fuels my suspicion that this is a scam.
My mother’s & my own medical info may have been compromised from a security breach at 2 hospitals (which we’ve been notified about both over a year ago and just this year too. And that further makes me suspicious of this number.
If this really is Medco, they need to stop acting like a telemarketer. It’s creepy af. And if they leave a message, they should be able to leave all the info & not want us to confirm [***] when/if we call back.
This number just does not act like it’s legitimate.

I received a call that I did not pick up. Next, I received a message from Express Scripts/ Medco that my prescriptions were refilled. It's definitely from them.