Hi Kate,
Yes, I have been seen at the Duke ACHD clinic (adult congenital heart disease) since 2004 for followups on my replaced aortic valve. My particular surgeon also sees me for followups for my repaired ascending aorta (although not many surgeons do this...he follows his patients for life). The ACHD clinic uses a team approach, so I have seen several cardiologists there. The one I have seen the most often is Dr. Thomas Bashore who is the head of the ACHD department and the clinical chief of cardiology at Duke. I've also seen Dr. Cary Ward quite a bit (very good female cardio if interested) and Dr. Michael Camitta on several occasions. Dr. Bashore is nationally recognized as one of the best ACHD cardiologists in the nation.
Here is his Duke profile:
http://cardiology.medicine.duke.edu/faculty/details/0112850
And here is a link to the main page of the ACHD clinic:
http://www.dukemedicine.org/treatments/heart/adult-congenital-heart-disease
To see all of the doctors from the ACHD clinic, when you visit the link above ^ click on the blue doctors button on the right hand side of the page (can't seem to cut/paste the link correctly here).
Since you have a congenital BAV you will more than likely want to be seen at the ACHD clinic as they are experts in this area. The cardios there work closely with the Duke heart surgeons, so if/when they feel it's time for a consultation with a surgeon they will recommend one with the most expertise with your particular heart condition.
Let me know if I can help answer any other questions. Do you know who your upcoming appointment is with?