Robert Antonelle, MD. Gastroenterology. (914) 949-7171. 311 North Street, Suite 403, White Plains, NY 10605 99 Business Park Drive, Armonk, NY 10504. Affiliated with White Plains Hospital since 1993 and board-certified in Gastroenterology, Dr. Antonelle has been named a Castle Connolly "Top Doctor" for the past 14 consecutive years..