There are plenty of companies nationwide that offer some variety of paramedic certification assistance. In house courses, low/no interest loans, etc. There will always be a catch, usually a length of service contract. This means a balloon payment if you ever separate from the company and may involve other limitations like fixed wages while under contract.
So for example they loan you nine thousand dollars at 0% for school and in return you have to maintain full time employment in good standing for three years at say 17 dollars an hour. If you complete the three years, you become just another employee, eligible for raises and such. If at any time you separate, you owe them 9,000 - 250/month for the time you worked there.
So the take home point is read the fine print. Know what you're agreeing to and try to see the future. It would be problematic if after getting your medic and working for say a year and then you get an offer letter from a fire department. If you don't have the six grand, you're stuck.