His patients gave him an average rating of 5.0 out of 5 stars. Areas of expertise for Dr. Oppermann include cancer surgery, thyroid problems, and colon cancer. He is affiliated with Houston Methodist Hospital. Blue Cross Blue Shield Bronze, Blue Cross Blue Shield Gold, and United Healthcare Choice are among the insurance carriers that Dr. Oppermann takes. New patients are welcome to contact his office for an appointment. Dr. Oppermann attended medical school at West Virginia University School of Medicine. Dr. Oppermann has received professional recognition including the following: Texas Rising Stars.