My Husband Had A Life-threatening Emergency And Was Taken By Ambulance To A Hospital In Hawaii While We Were On Vacation. We Gave Them Our Medicaid Insurance, But They Refuse To Accept It?! Please Help!

My husband had a life-threatening emergency and was taken by ambulance to a hospital in Hawaii while we were on vacation. We gave them our Oregon Medicaid Insurance, but they refuse to accept it. We received the hospital and EMS bills a few weeks ago and called our insurance to get it taken care of. Our Oregon Medicaid Insurance is willing to pay for it, but Maui will not accept it.

Backstory: My husband has epilepsy and during our stay in Hawaii, he ended up with severe sleep deprivation. He had several seizures for 3 days within hours of each other. He was experiencing extreme psychosis and at that point was unable to sleep. He had a total of about 5 hours of sleep during that 3-day period. He was seeing/hearing things that weren't really there, He was walking around our campsite naked thinking we were at home, He almost walked right into the ocean next to our campsite before I stopped him. And continued having seizures through all of that. He had at least 10 seizures, but I stopped counting after a while. When I got him to the hospital, they pumped him full of drugs to knock him out so he would get some sleep, but it barely worked. His blood oxygen levels were dangerously low and the nurses were all very concerned. The doctors said he had metabolic encephalopathy. That with the seizures.... He would have died if he wasn't admitted.

We have been trying to get the Hospital in hawaii to accept his insurance for weeks now, and they are refusing to accept it. Our insurance is willing to pay, what can we do?

Aren't hospitals legally obligated to accept out-of-state Medicaid in the case of a life-threatening emergency? Any advice is much appreciated.

edit: I also want to add that we gave the hospital his insurance card, and they did not inform us that they would not accept his insurance until the day he was discharged. Not that it would have changed the fact that he needed to be admitted, but there has to be some kind of law they are breaking right? We just need help. We cannot afford this. My husband is 60 percent blind with toxic optic neuropathy in both legs, he can't drive, and can barely see (even with glasses), and cannot work. We are currently in the process of getting him on SSDI, because of his disabilities. What can we do?