My niece visited in March this year from the UK, we are American Citizens, we paid for the initial cat scan to determine her diagnosis, she was admitted to hospital and later released to fly back on her booked return flight, she had a bowel blockage and had the necessary treatment to clear the blockage but no surgery, thankfully. The hospital or agencies have been sending her bills and she has now responded saying she is disabled, on limited income and lives in social housing which is all true but she acknowledges the debt and is willing to pay off as she can afford, she took out travel insurance in good faith. Today I have received a billing letter addressed to her at my address. I am planning to send this to her and not open it. I am tempted to send it to the address given and advise she does not live here but in the UK. Of course she did take out travel insurance but the insurance company in the UK have not responded as yet. Any advice ??
If your niece took out medical insurance for her trip to the USA, then her medical costs will be (at least mostly) covered. It should not be necessary for her to talk about her personal circumstances. She can simply tell the billing agencies that she has medical coverage and the bills will be met. She should give the name of the insurer - the hospital may be able to deal with them directly. Hospitals are used to delays in this case and although they may press for payment (US hospitals being for-profit businesses) they are used to this situation.
Being uncooperative will not help. Forward any correspondence to your niece. Contact the billing agency and give them her address so that they do not send things to you.
This assumes that your niece became sick while in the US, and did not visit the US in order to have the treatment. It also assumes that she didn't withhold from her insurer information about her medical conditions when they gave her insurance.