Is this a joke? You are asking strangers on a rose forum for a pediatrician recommendation for a sick child? Yes, it must be.
Don't you have coverage? A trusted neighbor to ask? Can't you call a local hospital for a recommendation?

You may have better luck at the parents of infants forum. Possible, someone else has a child with bad acid reflux and has already done the search. This forum hasn't been that busy lately.

Here is a link that might be useful: Parents of infants