We use F Read Hopkins Pediatric Associates: Dr. Nichols
She's amazing! I breastfed DS for 1 year and she had no problems with it what-so-ever, we delayed certain vaccinations and co-slept with Jack for the first few months. She never had a problem with any of it! For that matter, she didn't really have anything to say about him not being circ'd either. We really like her and wouldn't go to anyone else. She is who he sees every visit and is supportive of the decisions we have made as his parents. She's ready to explain anything we don't understand an answers any questions we've had.
Good luck finding a pedi that's right for you! I'm not sure how you would go about doing this but I have heard of people having interviews with various pedis before bringing their children to them for visits.
I've got her number if you want it!