I believe it is from a "company" selling generic viagra and other "medications" without the requirement of a doctor's prescription. No idea as to their trustworthiness.
Received a call from 201-844-6399 on 5/18/2015 at 5:24pm EDT. Caller ID displayed "Bayonne NJ". Did not answer and no message was left.
Based on the comments posted it appears that this is another number being used by the "Canadian Pharmacy" scam. I have received regular calls related to this scam since 2009. Each number is usually reused several times over the course of about a month before a new number is used. My block list for this scam currently has almost 60 numbers in it.
Just called our fax line. Been getting a lot of calls from these Canadian pharmacy numbers to our fax line. Doesn't bother me because the printer/fax/copier we have hooked up to it answers after one ring. I added this number to the blacklist on our voice line, though.