I'm in Carrol County and in the same boat, kinda. I started this pregnancy with a midwife, but she will no longer see me because of everything that's going on. Since then I've interviewed SO many obs/midwives at local hospitals and was so disappointed with their "methods and mindsets". I told them all I wanted a HB but couldn't any longer and instead I wanted a very natural hands off birth at their hospital. Absolutely none of them were supportive or understanding in anyway.
I finally did find a nice hospital midwife in Hanover, PA but she is the only midwife out of 6 obs and I actually haven't even had her for an appointment yet. I did not tell anyone there that I was previously planning a HB, but did make it very clear that I wanted a natural birth. They seem fine with that, and not pushy.
In the mix of preparing for a home birth, then being thrown back into a hospital, I did a lot of soul searching, reading, and research. I've basically come to the conclusion that I'll birth at home anyway. It will be without a midwife, but I have several educated & supportive women who will be there along with my husband. If somethings happens between now and then, or even during labor, I will go to the hospital. Since I'm already in their system, I think it will be a lot smoother if I have to go in. When I birth at home, I'll just tell them it was an accident and things went to fast. Also making it smoother if I need to go in for stitches etc. However appointments are a pain in the ass, and there is a lot of paper work and hospital BS. I'm undecided if it's even worth it, I guess time will tell.
If you feel it's necessary, I'd just find a decent hospital and go for an appointment or two just to get acquainted. They will want to know what other care you are receiving and what tests you had done/will need to do and blah blah. You can tell them you are also seeing a midwife for a HB and are only there to get in their system in case something goes wrong. You do not need to tell them the name of your midwife. You'll either get a bunch of back lash, or appreciation for being "responsible". It really just depends on the hospital. Set up a consultation and if they give you grief say "thanks, but no thanks." Some hospitals might not even want to see you if they know you aren't going to give birth with them ($$$) All you can really do is call around and see.
If I had an actually HB midwife, I wouldn't even worry with a hospital unless an emergency arises.