I need to trap and get these feral cats to a veterinarian. Can you help me?

I would call animal services first.and see if they can come out and trap the cats.

They may. Call them. They don't monitor this.

I've got the same problem. There's a TNR program (Trap,Neuter,Release) if you're willing to let them neuter cats then bring them back to same sight they will work with you. There's also some vets that work with the TNR program. I keep the feral cats but let them adopt out the kittens. I tame the kittens tho. They're sweet babies for ppl to love. If there's an abundance of feral cats they'll help with food as well. Feline Leukemia is a serious thing for the cats population tho. There's also a TNVR program. (Trap,Neuter,Vaccinate,Release) as well. Look on internet it's very helpful. Good Luck.

Colleen there are lots of organizations that are better equipped to help you. Google "trap and release cat programs" and give one a call.