health insurance for my dad who just lost his job and coverage?

My father recently lost his job including his health coverage. He is 58 years old with health issues and need medications. We simply can not afford the insane rate that insurance companies are quoting us with. Is there any government supported coverage that can cover the ridiculous cost of medication? or any other option? If we can not get covered, the insurance company just signed my father a death certificate. ...please help
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