Northern Virginia Internal Medicine Portal. Health (5 days ago) Internal Medicine Group of Northern Virginia - Home. Drugs (9 days ago) Internal Medicine Group of Northern Virginia: 1850 Town Center Parkway, Suite #314 Reston, VA 20190 (703) 481-5212 Home Providers Office New Patients Forms Contact COVID-19 Update: In order to provide the best and safest care for our patients and staff due to ....