Dr. Wissam W. Mattar, MD


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Accepting new patients Group 9 13 years of experience


Dr. Wissam W. Mattar, MD is an Internist (Gastroenterologist) in Washington, DC. He specializes in Gastroenterology, has 13 years of experience, and is board certified. He graduated from Temple University School of Medicine.

Dr. Wissam W. Mattar, MD works at Dr. Wissam Mattar, Md and 1 other location. He is accepting new patients and accepts major insurance plans. Please call ahead to schedule an appointment with Dr. Wissam W. Mattar, MD and to confirm all accepted insurance...

About Dr. Wissam W. Mattar, MD


  • Gastroenterology


  • Acid Reflux
  • Colon Polyps
  • Obesity
  • Pain
  • Stomach Flu

Years of Experience

13 years of experience

Languages Spoken

  • English



NPI Number


Education & Certifications

Medical Education

  • Temple University School of Medicine


  • Christ Community Health Services Program

Board Certifications

  • ABMS

Insurance Plans Accepted

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Dr. Wissam W. Mattar, MD


Primary Location Pin Icon

Primary Location

Dr. Wissam Mattar, Md

110 Irving St NW,

Washington, DC 20010

  • Wednesday Closed
Wissam Mattar

515 22nd Ave, Monroe Clinic And Hospitals

Monroe, WI 53566

  • Wednesday Closed

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