BUT, the doctor's assistant failed to submit valid insurance claim within the time required by the insurance company.  THey admitted this and apologized - they had fired the assistant and were trying to collect anyway.  If the doctor had filed on time (and its like months to a year afterward) the insurance would have paid.  So I refuse to pay.

I keep repeatedly receiving call from this number........they say I owe money to a doctor. I probably do, I have asked for them to send me documentation, they say that they have on 6 different occasions. I have not received any mail from them. I now know who they are:
Avante USA, Ltd.
2950 S. Gessner Suite 265
Houston, TX 77063
832-476-1740 Office
713-785-4467 FAX

I got a call from this #. When I answered it was an automated msg saying they were trying to collect a debt.  When I called back the # just hangs up on you.