What is the earliest I can get in to bring my dog, I think he has something stuck in his throat and keeps trying to cough it up,

I would take him to the emergency vet.

How did it go Jacque? I'm with the reviews, emerg then regularly Cornell Vet 😁

Cornell Rd Vet is very accommodating, but if emergency try emergency vet or call them and check.

Cornell Rd Vet is good at fitting you in when they can, but I agree that it sounds like you've got an emergency.