Welcome to Waco Gastroenterology Associates!

We would like to welcome you to Waco Gastroenterology Associates, where we specialize in the treatment of diseases of the digestive system. We proudly serve the residents of Waco, Texas in a professional and respectful environment.

Our doctors and staff perform the latest diagnostic testing in gastroenterology and employ the most modern techniques to treat conditions such as ulcerative colitis, Crohn’s disease, irritable bowel syndrome, colon cancer and hepatitis. We are dedicated to preserving your digestive health and providing the advanced care every patient deserves.

Thank you for choosing Waco Gastroenterology Associates! We appreciate you placing your trust in us. Please feel free to contact us if you have any questions or would like to schedule an appointment.

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Meet the Doctors

Learn about Drs. Hari Ancha, James Boss, Edward Carpenter, Edward Contreras, Bryan Hanysak, Hanu Ancha, Christina Levings, Charles Rives, and our Nurse Practitioners. Learn More

Colorectal Cancer Screening


If you’ve had a change in bowel movements, found blood in your stool, or suffered from rectal bleeding, abdominal discomfort, fatigue or unexplained weight loss, you may be at risk for colorectal cancer. Learn More