I know for me, this is collections for a hospital bill.  I believe these guys collect only for the ER portion of a visit, but I could be wrong.

I recieved a call from 713 904 1604 and I didn't answer. So I called back to check who they were and they wanted me to verify my identity and I responded you are the one who contacted me, who are you? Their response was, we'll send you a letter in the mail...what? Do not give out your info, point blank period!

Received a call from this number.  Called it back and he said they were CMRE.  He asked if I was the person they were trying to reach and I said yes then he asked for my DOB and I would not give it to him.  I told them my bank and ID theft company said not to give them information and that if I had a debt they should send it to me by mail.  They hung up on me!  I have pulled my credit report and I do not have anything negative reported.

I received a call from this number and they left no message. I called back TWICE and when they answered w CMRE, I asked what company it was and they hung up on me TWICE!