Could be Arlington too. Or even Falls Church.
We go to Dr. Murphy of Murphy & Staats in Burke, which is not too far (we drive 40 minutes to see him). He is totally cool with delayed vaxing. I have heard of another practice in that area that is okay with different vax schedules, but I can't remember the name of it right now.
SAHM to Bird (6/07) and Bear (7/09), and now enjoying our newest addition, born June 1, 2011!
try all pediatrics; they have several locations and are flexible with the vaccination schedule; also, I like that there are multiple doctors there (you dont necessarily see the same one each time; while they may not become "familiar" with your family, they can consult with one another and its easy to get a second opinion.