I don't know anyone in your area. Just want to let you know that PDA is a very fixable condition. We have had them repaired in foster pups who did fantastic after the surgery!
In the meantime, you might want to apply for Care Credit...many specialists accept it and often it is at no or very low interest.
Healthcare and Medical Financing for Consumers | CareCredit™
I am sure that Lisaly will be along perhaps with suggestions about specialists. I believe that someone from Yorkies 911 might also have ideas about surgeons in your area.
Welcome to YT .. please keep us posted on your pup.