I've had 11 calls from this and similar numbers in the past 8 days with as many as 4 in one day. All are simply identified by the phone as "Cataumet, MA". The last 4 of the other numbers I've seen (so far) are 4220, 4215, and 4077. They seem to be peddling something to do with Medicare.
I'm suspicious because 1) no company is labelled with the number, just Cataumet, MA, and 2) they don't ever leave a voice message so I can call them back if interested.