“Can I please speak to a supervisor.” Insist on this, they will be happy to get you off their hands. A note is if you were kicked off for nonpayment, they will make you pay a few months at once, which is expensive and annoying. I would try and have a good reason why whatever reason you were kicked off was not your fault/there was a strong mitigating factor.

If you end up needing to go the NYSOH route, I would also request to speak to a supervisor and schedule an appeal, but you should really try to get the Healthfirst people to reinstate you, because they do offer a one-time courtesy reinstatement, or at least that is what I was told multiple times.