I received a call from this # on my office line.  I don't remember the name but Nikki Johnson sounds right.  Same thing "take this seriously ....".  I did not call back because I'd heard of the scam and I didn't think the IRS phoned. Also, I don't remember ever putting my work number on anything with the IRS and know I have no outstanding issues or owe them any money.  It's a very unfortunate scam playing on people's fears.

Just received a message from 415-236-3632 claiming to be the IRS. The message was to call back immediately to avoid legal action.  Realizing it was a hoax but curious, I called and a thick-accented individual answered "IRS".   I said "What do you mean IRS"?  This flustered him and he said "Why don't you think this is the IRS?" to which I replied "because the IRS doesn't make calls".  He hung up.   Why can't these people make an honest living!!!!!

Yes, I just received this same call. Same name and number. Thank you for this post.

Got the same call, Agent Nikki Smith with the IRS.... whatever. I too have added it to the reject list

Saturday morning at 8:30 am I received this call.  Automated message with the same "do not disregard this message....call back before we take action against you".

Glad I googled the number and found this posting.  Why would IRS leave a phone message on a Saturday morning?