Contact Us

Marc Eisenbaum, M.D.
3700 Joseph Siewick Dr #203
Fairfax, VA 22033

Main Phone: (703) 758-8200
Fax: (703) 758-8316

Office Hours
Monday: 9am-12pm & 2pm-4:30pm
Tuesday: 9am-12pm & 2pm-4:30pm
Wednesday: 9am-12pm
Thursday: 9am-12pm & 2pm-4:30pm
Friday: 9am-12pm & 2pm-4:30pm

  • For appointments, medical records, labs, prescription refills, or general requests call (703) 758-8200.
  • If you are a Privia Member, you may request prescription refills, request appointments, access your personal health record, or send a secure message to your doctor by Logging in to your member website.
  • For questions regarding our Privia Membership Practice, call (888) 774-8428 or email Privia at

Emergencies/After Hours: For life threatening emergencies call "911" or proceed to the nearest emergency department. Please call our office number (703) 758-8200 for urgent after hours medical concerns. The answering service will page the doctor on call. If you have not received a return phone call within 30 minutes then call the answering service again and request to have the doctor re-paged. Prescriptions and prescription refills will be addressed during regular business hours only and will not be addressed by the answering service.