Dr. Diadoine in Prince Frederick, MD, office in a building right beside Calvert Memorial Hospital. Outstanding ENT. She is a short lady, but as nice as you could ever find. An outstanding doctor. Since I used to work at NIH years ago, I knew quite a few ENT doctors. I believe you will like her. Breathing problems caused by a DS is something that should be corrected early in the child's life. This is because the allergies caused by the DS can become a problem. Good luck.
Dr. Diadoine and her staff are wonderful. My daughter just had surgery there in March. Have nothing but great things to say about them.