Hey there!
In Savannah GA, there is Dr. Most. I've seen a few results from him in the FTM/NB/GNC Top Surgery Facebook group and highly recommend you join if you want to see lots of results from different surgeons! I believe there's a surgeon in Atlanta but I don't know their name.
I saw Dr. Keelee MacPhee in Raleigh, NC and am very happy. She operates on informed consent and from my interactions, I think she'd at the very least consider it with parent and therapist support, but you'd have to ask. There's also Dr. Hope Sherie in Charlotte, NC and Dr. Eric Emerson, I think in Gastonia, NC.
I highly recommend that facebook group I mentioned above, you can search locations and other tags in order to get specific answers, or post in the group! I've had TONS of specific questions answered there. You just have to send a join request and maybe answer some questions, I don't remember the process exactly to get in.
I don't know for sure the minor policy on most of those doctors, but I'm sure you can send them an email or a quick call and ask about it! I know surgery for minors is becoming more common. Personally, I don't know of any east coast guys who got it before 16, but I know of a couple west coast guys who got it around 14/15 so times are definitely changing and hopefully that mindset is spreading over here.