The following organizations can provide financial assistance for medical emergencies or support for ongoing medical care for your pet.
ARF – Animal Rescue Foundation
http://www.arf.net/animal-programs/emergency-medical-fund/index.php
ARF’s Emergency Medical Fund® (EMF) provides low cost non-emergency veterinary care to qualified low-income residents of Contra Costa County, California at ARF’s clinic. See eligibility requirements.
UAN – United Animal Nations
http://www.uan.org/index.cfm?navid=161
UAN’s LifeLine Fund provides financial assistance to pet owners and rescuers for emergency vertinary care for up to $300 for animals that would otherwise not be treated. See their eligibility requirements.
CareCredit
http://www.carecredit.com/vetmed/
CareCredit can be used for both routine check-ups and for emergency or unplanned care.
Pet Insurance
Consider purchasing insurance for your cat. For a reasonable monthly fee, most veterinary expenses are covered with reasonable co-pays or deductibles. Options include: HealthyPaws, Pet Plan, Trupanion, Embrace, Pet First, Pet Best, etc.
Payment Plans
Some vets are willing to set up monthly payment plans for larger vet bills– check around and ask yours if they are willing to do this.
Other Resources
Alley Cat Allies – List of National Organizations
http://www.alleycat.org/NetCommunity/Page.aspx?pid=649
UAN’s List of National Organizations
http://www.uan.org/index.cfm?navId=163