The Cat Clinic of Seattle has been taking care of my cat Bruce since he was a small kitten. He's 12 years old now, and very grumpy. They are very tolerant of his tantrums, even though I'm pretty embarrassed when he yowls.
This cat-only clinic has been caring for my now senior cats since they were kittens. Kind, compassionate, knowledgeable docs and staff, two resident boy kitty "hosts," quiet office since it's cat only (ok mostly quiet.)