Gastroenterology Associates Banner - Hilo, Hawaii

About Us

Gastroenterology Associates & The Endoscopy Center have been serving our Big Island community since 1990. As a group of caring physicians, health professionals and administrative personnel, we firmly believe that quality medical care is best delivered in a collaborative environment where health providers and patients work together as a team.

Our ultimate goal is to provide each individual patient with the medical expertise, compassionate understanding and quality of care we would provide to members of our own family. We value and respect our partnership with our patients, physicians, payers or any other customer by providing excellent service and cost-effective, high-quality care. We make these commitments as a team and strive for the best possible outcomes for our patients.

Contact Us



Mon-Fri 8:00 am – 4:00 pm

134 Pu’uhonu Way
Hilo, HI 96720



Gastroenterology Associates & The Endoscopy Center are focused on the digestive system and its disorders. We can help those who are in distress by providing patients thorough consultations, testing, and treatment options. We also offer preventative care measures such as screening patients for colon cancer.


Esophagogastroduodenoscopy (EGD or upper endoscopy), colonoscopy, and flexible sigmoidoscopy.

EGD or upper Endoscopy procedures are performed to examine the upper gastrointestinal track including the esophagus, stomach and the upper part of the small intestine (duodenum).

Colonoscopy procedures are done to examine the colon or the large intestine. This is done to check for abnormalities or disease, or as a preventative measure to check for colon cancer.

Sigmoidoscopy is a test that looks at the rectum and lower part of the large intestine.

Our Physician

Timothy C. Jahraus, M.D. – Dr. Jahraus, a graduate of University of North Dakota, received his M.D. from St. Louis University. His internship, residency in internal medicine, and fellowship in gastroenterology were taken at University of Kansas and St.Mary’s Health Center in St.Louis, Missouri. Dr. Jahraus holds Board Certification in internal medicine and gastroenterology.

Physician Opportunity