No idea.

Apparently it's a call center in Massachusettes that handles sales calls for multiple businesses.  They called me to see if I was still interested in buying a used Toyota from a dealership in Atlanta,GA.

this phone number was a reminder call from IHC healthcare to remind me to make sure my childs immunizations were up to date.

It is Express Scripts (ExpressScripts.com).   For me this is a valid call since I get my maintenance drug through them.  Call is to remind me that 60 day maintenance drug can be reordered.

For me it was a call fro Kaiser reminding me to refill my perscription. I get it every month.

Yes... it's a recording. If you don't want to receive these reminder messages, Call Kaiser and let them know or OPT OUT at KP.ORG

I got a call from the same number again and heard the complete message (in a slightly different form).

At first, a computerized woman's voice says something that sounds like "help me," "public," or "health net." After a short pause, the voice continues: "Hello, this is Kaiser Permanente calling for [my name]. We're calling to share some informtion to make sure you're getting the most out of your prescription drug coverage. Please call us back toll free at 1-866-839-2132. Again, the number is 1-866-839-2132. Thank you, and have a good evening. Goodbye."

I recently changed my health insurance after getting a new job and no longer being covered by my dad's work, so there's no real mystery here. However, the message is made a bit creepy by how happy the woman sounds, especially when she says "goodbye."

number belongs to DSCI corp in Mass.  Here's what I found:
DSCI Corporation provides telecom and communications solutions for businesses, governments, and non-profit organizations. It offers voice services, such as voice over IP, SIP trunking, local, long distance, toll free, calling cards, and conferencing; converged services; Internet services, such as Internet access, and Web and email hosting; private network services, such as MPLS VPN and private lines; data center services, such as collocation, network maintenance and monitoring, and online data backup and disaster recovery; and managed security services, such as anti-virus with anti-spyware protection, intrusion prevention, anti-spam protection, SSL and IPSEC VPN, traffic shaping, and Web con...  SOUNDS LIKE A SALES CALL.

They just called me and in fumbling to get my phone out of the charger to pick it up, I apparently answered the call and then hung up on it. I then immediately did a reverse phone search on whitepages.com and it came up as unpublished.  They haven't called me back but I was like "hmm, why is someone from Mass. calling me, I've never lived there and I live on the west coast".  But I *did* just  go off of Kaiser Insurance after having it for 2 years, so maybe they were calling to try to get me back....

It's Kaiser! Promoting it's self?

The caller left a voice mail. I only heard the end. It was a recording of a woman's voice: "..make sure he's getting the most out of his prescription drug coverage. Please ask him to call us back toll free at 1-866-839-2132. Thank you for passing this message along, and remember, today is a good day to thrive."