hi and welcome to the forum!
it is uncommon for a healthy pacman frog to be in need of vet as long as you provide good healthy food and proper conditions, but of course, you can't be ever guaranteed you will never need one. there is dr. Frye ( ph in a tree frog section of the forum) that would help over emails and ship meds if needed to any US address.
just make sure you know as much as you can before getting one, have everything set up properly and get a frog from reputable breeder such as Mike or Ivory ( both on forum).

and of course for all you frog questions stick around with us here