Since you are in the military, you have hospitals on all bases/posts. You will have a military doctor handle your case. If you do have an AN, and I hope you don't, a couple of things might happen. If you do have one, you may be offered a medical discharge, and then you are on your own, with no insurance and a pre-existing condition. If you stay in, you will probably be sent to Walter Reed or some other training hospital for treatment. My surgery was at Methodist Hospital in Houston and a military resident attended my surgery. She was already an ENT, and was involved in my surgery. When I was in the military in the 60's, they did not ask how you wanted to be treated, they just treated you depending on if you were a "lifer" or "non lifer". The right answer is always "LIFER". Also, depending on your job in the military, they always take base line hearing tests...I worked on the flight line around jet engines for years, and they want to maintain your good health.
I was in tech school for 9 months at Keesler AFB in Mississippi and had a great time. I am sure some things have changed, but when it comes to following orders, you just do what they tell you to do. HOWEVER, this involves your health, so don't just let them tell you how you will be treated. I broke my wrist, and an OB/GYN treated me. Hopefully you really just have bad hearing and not an AN. If you do have one, read everything you can here. Ask questions. Learn until you are blue in the face. Good luck to you.
PS...don't let the OB/GYN touch you!