CRH O'Regan System - Non-Surgical Hemorrhoid Removal 

Waco, TX

To schedule an appointment with Waco Gastroenterology Associates please call 254-307-9600

About this practice:

Waco Gastroenterology Associates
364 Richland West Circle
Waco, TX 76712
P: 254-307-9600
F: 254-537-0313

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Bryan J. Hanysak, M.D.

Dr. HanysakDr. Hanysak attended Baylor University in Waco, Texas, where he graduated with degrees in Biology and Philosophy in 1996. He attended medical school at the University of Texas Health Science Center in San Antonio, TX, remaining there for his Internship, Residency and the completion of his Fellowship in Gastroenterology in 2009.

Dr. Hanysak joined Waco Gastroenterology in July 2009. In addition to his extensive training in general and biliary endoscopy, Dr. Hanysak has advanced training and experience to perform endoscopic ultrasound (EUS) and is the first physician to bring this service to Waco.

Dr. Hanysak is married and has two sons.

Hari B. Ancha, M.D.

Dr. AnchaDr. Ancha began his medical education at Guntur Medical College in India, where he trained in general surgery and endoscopy. In 1993, he began training with the University of New York Medical College in surgery and internal medicine.

Dr. Ancha completed an Internal Medicine Residency program and became certified by the American Board of Internal Medicine in 1997. He completed a Fellowship in Gastroenterology at the University of Oklahoma Health Science Center in Oklahoma City during the summer of 2006.

Dr. Ancha joined Waco Gastroenterology in July 2006, and his diverse training background makes him a strong addition to the group. He is proficient with EGD, colonoscopy and ERCP. Dr. Ancha is also the only Waco physician performing wireless capsule endoscopy.

Dr. Ancha and his wife have two daughters.

Edward D. Contreras, M.D.

Dr. ContrerasDr. Contreras received a B.A. in Biology from the University of Texas at Austin in 1984 and went on to graduate from the University of Texas Health Science Center in San Antonio in 1988. Dr. Contreras completed his medical training with an Internal Medicine Internship and Residency and Gastroenterology Fellowship at the University of Texas Health Science Center in San Antonio from 1988 to 1994. He was Board Certified for Internal Medicine in 1991 and Gastroenterology in 1995.

Dr. Contreras is a member of the McLennan County Medical Society, American College of Gastroenterology and American Gastroenterology Association. He maintains privileges at Hillcrest Baptist Medical Center, Providence Health Center and Waco Gastroenterology Endoscopy Center in Waco, Texas.

Dr. Contreras is married with two children.