Hi! I am in D.C. - will you have a car? Which area will you be living?
I use Veterinary Holistic Care which is like 15 minutes from my house in Georgetown, but its in Bethesda.
Also, here is a link to a small breed meetup playgroup I am the co-organizer for.
Georgetown Cavalier King Charles & Small Breed Dog Group (Washington, DC) - Meetup.com
You should become a member! Its a great way to meet people and find out all about vets and other dog friendly activities in the area!
Welcome to DC!