Note, calling their number will only get you to a menu for a mailbox.

Don't bother calling back number...probabably collects your number to say it's a live one.

Checked online, and it states "National Government Services".  With Obamacare kicking in in a couple months, it's likely trying to get you to sign up with them to manage your medical/medicare needs.

Person called, and hung up while I tried to answer on the second ring, thinking it's one of my friends from lower PA trying to reach me.

Little do these people realize or care how absolutely ignorant it is to not give a caller an opportunity to at least say that they are not interested.  I bet I'll begin receiving countless calls over the next week, until their telecommunication provider finally pulls the plug on them.

CONSTANT CALLS FROM THIS NUMBER

This is in fact the main line to National Government Services. You probably wont get a live person to answer this  phone number, but if you have the last 4 numbers of a person like one of the previous posters did. you may get a live person. The company islegit and They are in fact Medicare representatives. Hoping this helps with some questions...

I'm a doctor. I got a call at 8:12 on a Saturday morning (Eastern Time) from someone addressing me as "Miss" and calling herself Bonnie Shir (Sheer?) and stating she was with Medicare National Government Services. She asked me to call back that morning before noon to "do a quick verification" of something unspecified having to do with my hospital. She left the callback number 717 565 3511, which I called, and got a real-sounding voicemail.

i received calls from this number couple of times... no one lifting...

Noone there when answered.

Getting repeated calls from this number, but noone is there.