Dr. Mattar (or staff) speaks the following foreign languages: Arabic and Spanish. His areas of clinical interest consist of colon cancer, crohn's disease, and ulcerative colitis. Dr. Mattar is affiliated with MedStar Georgetown University Hospital. Dr. Mattar attended medical school at Virginia Commonwealth University (VCU) School of Medicine. He has a 4.5 out of 5 star average patient rating. He honors MAMSI, Blue Cross/Blue Shield, and Coventry, as well as other insurance carriers. New patients are welcome to contact his office for an appointment.