Dr. Wissam E Mattar specializes in gastroenterology in Monroe area. Dr. Wissam E Mattar has a medical practice at 515 22nd Avenue, Monroe Clinic And Hospitals, Monroe WI, and has over 13 years of experience in the field of medicine. He graduated from his medical school with his medical degree in 2004. He is affiliated with numerous hospitals, including The Monroe Clinic (WI) and more. Dr. Mattar is accepting new patients at his medical office and practice location in Monroe, Wisconsin. He is available for appointments, preventative care, medical care as well as ongoing patient care.