I switched to this vet after mine relocated. So here's the good news - I think they are quite competent clinically. But the problem with VCA Miller is that they are very expensive and have rigid processes that they require, that cost you even more money. Very commercialized! Here's some specifics:
1. I gave full history and had my dog examined by a vet. I went over his medications (heartworm and eye drops) so that I could get my refills when due. They didn't mention at the time that this was not sufficient!
2. His needed a refill on his eye drops. They refused to refill as they were originally prescribed by another vet. They say it's a legal requirement. If so, when I saw my vet in the lobby and she looked at his eye briefly (just a little goopy) wouldn't that be enough? If not, maybe she could take him in a room for 2 min to look more closely? That would be okay too, but no - I had to make an appointment for a more formal (and costly!) examination before they would dispense a refill on medication.
3. I had already paid over $500 in examination, urine test and antibiotics for a urinary tract infection. After 2 days and a completed 2 week course of antibiotics he was 100% fine. $500 for an exam and tests and a course of antibiotics??? Based on my last vet, this is very expensive.
4. I also had a prior $100+ charge for exam and stool culture before they would continue with his heartworm medicine. Apparently another legal requirement that lets them charge inflated prices for simple everyday needs. (is it really a legal requirement? 'cos the internet searches I did said not all vets require that if treatment has been continuous)
My advice would be to find a vet that cares about your animal first, and make fair and appropriate levels of revenue. You want them to charge reasonable prices for good care, not recommend or require costly exams or tests in order to maximize their profit.
Pros: Clinically competent
Cons: Overpriced, very commercialized, rigid processes cost you even more
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