The frequency of veterinary visits will depend on the age, health and lifestyle of your cat. Older cats may need to visit their veterinarian quarterly for a wellness exam while younger cats can be examined every six months. Cats who have frequent exposure to other pets or feral cats are more likely to get infected with parasites that would also require a vet visit. Your veterinarian will prescribe a schedule based on these professionals judgements about what is best for each individual animal in light of its circumstances.