Just leaving this here for reference:
In 2022 I was denied full insurance payment of a routine, preventative echocardiogram at Stanford Healthcare to monitor my heart issues. I was balance billed $5000+. The insurance company was HealthNet. The policy clearly indicated full coverage of preventative procedures, without a deductible. They said they did not recognize the procedure as preventative. Fuck them, I know better about what's preventative and what's not than them.
I argued the shit out of it, dozens of e-mails, hours of phone calls, and it was eventually sent to debt collectors. I wrote back to the debt collectors that it wasn't my debt and to stop contacting me. I reported it to a couple of government agencies as well to give them more headaches. I did not pay.
In 2024 it was written off as uncollectible.
(a) Use a virtual mailbox with your health provider so that they don't send debt collectors to your residence. Do not give them your residential address.
(b) Use a virtual phone number with your health provider so that the debt collectors can't call you. Their only option will be mail and that leaves a paper trail which you DO want. NEVER communicate with a debt collector by phone.
(c) Freeze your credit reports with all 3 bureaus so that they cannot use your mailing address to find your residential address.
(d) If they do somehow find your residential address, do NOT answer. Only communicate by mail.
Disclaimer: IANAL, account of personal experience only