Are any vets here USDA certified? Moving to Germany and I need all of my pets to be cleared / treated by a USDA certified vet.

Yes they are

Yes they have a couple USDA vets.

I'm not sure about all of that however my dogs came down with kennel cough after one visit

That's a great question I don't have the answer to that but they are open give them a quick call they will be more than happy to help you have a great day!