cobra health insurance

What reputable health insurance companies are out there?

My mom doesn't have health insurance and my job doesn't give insurance to family members.

I would like to pay monthly to a health insurance company so my mom could get health check up when she needs it.

Do you know any health insurance companies that can accept low monthly payments since I don't get paid that much?
We live in northern california.

health insurance?

I'm doing an assignment on health insurance and I wanted to know why is it a good thing to get health insurance?

Thanks!!!