Epidural responsibility

This is just for my own information...this is hard for me to put into words because it sounds like a silly question. But I wanna ask anyways. Is it the responsibility of the MD or the anesthetist to place an epidural for any reason (not just for child birth)? Would there be any reason for placement by MD only? What is the anesthetist/MD responsible for once placed? Who prescribes and makes changes to the Rx if needed? If ya'll have any additional info, please share! I do not want to be an anesthetist. I'm just super curious about it all.

Again, I'm sorry if these questions sound silly. Just wanted to hear the answer from people with experience.

Epidurals are usually placed and managed by anesthesia providers only. The anesthesia provider could be a CRNA or an anesthesiologist.

Are there specialties in the field? Or if a CRNA is working at a hospital, would the same person provide anesthesia in the OR and go straight to an epidural for a woman in labor?

Yes, some anesthesia providers do specialize.

I would venture to guess that most hospitals CRNAs work in both the OR and OB.