I get at least 3 calls per day from this number, they never leave a voicemail.  I answered once and the caller hung up.

This is Medco -- They left a message and a callback number that was the same as the number given to me on the Medco website. When I called, they said that the address on the prescription I faxed was fuzzy and they needed to verify it.

Received 1st call yesterday @ 2:08pm.  I tried to call it back to see who it was since no msg was left. Was Always busy. 2nd call today @ 3:08pm, I didn't get to the phone in time to answer it. Again I tried calling it back a couple times so far and busy.  I searched the number and found what most everyone else did :  LandLine Wyckoff NJ, but that's it.  I do not understand why no msg to say who's calling, just common courtesy. Another interesting development: since this # started calling another # 1-800-268-570 with the last # missing calls but more frequent - almost hourly yesterday and today.  I can't call it back and I'm not answering it since they don't have the decency to provide their full #.  Seems quite shady.  After a little research others stated it is related to this number. Seems both are from MEDCO (do not know if it really is MEDCO) trying to get your info stating they want to provide Rx through the mail.  I haven't been able to confirm it, yet.

This number just called me and I didn't answer.  They DID leave a message stating they were MEDCO and a pharmasist needed to speak with me regarding a medication I am taking.  They gave a number for me to call back 1-866-546-8146.  When I called back it said I had reached MEDCO.  A pharmasist answered the phone and asked me about one of my medications that they noticed had not been filled in a while.  He said they have a new diabeties center and that they are on hand for any diabeties questions etc.  This was a legit call and the pharmasist was very courtious and helpful.  Since I don't have diabeties, he said he would take me off of this call list.  So I think this number must be for their diabeties center.

first of all you never give out personal information to any one WHO CALLS YOU!!! this is a dead giveaway that it is not who they say they are  almost every buisness  that is lagit will have someone there to answer your call when you call back.
comeon people use common sense don't listen to the people saying it is medco becouse i had a lawyer act on this number and it is not medco there is not even anyone at the address it claims to be it is a empty house .