In my personal experience, there is a lack of investment in snakes to base a business around them. As in, often it is cheaper/easier to replace a snake and/or the issues are husbandry related. Having said that, there are vets who specialize in exotics (reptiles, birds, pocket pets, etc) and there are SA/MA vets who will also treat these species in their regular practice.
I really like snakes...I have at present handled 7 of the most venemous snakes in the world, and I have a huge black rat that lives on our property and that my husband calls my 'pet' because he isn't terribly shy, and he doesn't slither off when I am around (all our dogs are trained not to mess with snakes.)