I live in White Oak and work in Bethesda. I went to the Bethesda GW MFA office for everything during my pregnancy (OB, MFM, all ultrasounds, labwork). The only time I went to Foggy Bottom was to actually go into the hospital. Unless you're prone to precipitous labor, or really want to have your baby at a hospital very close to where you live (in which case, your best options are Shady Grove or Holy Cross), I would recommend staying with MFA.