Silicon Valley Gastroenterology Helped me get rid of my heartburn. I have been able to enjoy good foods pain free again. Thank you Silicon Valley Gastroenterology!

Office Hours

Monday - Friday: 9:00am - 4:30pm

(Closed for lunch from 12:00-1:30pm) Any calls during lunch or after hours will be redirected to our answering service. 

Silicon Valley Gastroenterology

2490 Hospital Dr. Suite 103

Mountain View, CA 94040

Fax: 650-963-5712

Contact Us

Silicon Valley Gastroenterology's GI Specialists

Board Certified Gastroenterologists 

Dr. Andrew Roorda and 

Dr. George Triadafilopoulos  

Meet the Doctors

We strive to provide excellent medical care to our patients who are dealing with problems in the Esophagus, Stomach, Duodenum, Small Intestine, Colon, Rectum, Liver, Gallbladder, and Pancreas. Our GI Specialists can help!


We offer a variety of procedures in our surgery center or at El Camino Hospital.

Such as: Colonoscopy, Endoscopy, Sigmoidoscopy, ERCP (Endoscopic Retrograde Cholangiopancreatography), Capsule Endoscopy, Hydrogen Breath test.

GI Specialists

We accept most public and private insurance plans. We also offer special pricing for cash-paying patients for most procedures.

Health Insurance

New Patients

Prior to your appointment, simply download the forms, print them, and bring them to our office to minimize waiting room time. 

Our staff is available M-F to help schedule an appointment for you.

Click About Us / Book now!

Appointment Request

Dr Triadafilopoulos Update: As of September 30th 2022, Dr T will no longer see patients in the office or perform procedures. After 40 years in the field of Gastroenterology, he is retiring. He does not leave his patients in the dark as he will continue to be available as a consultant to his patients whom he adores and cares for very much. We thank Dr T for his remarkable career of service and wish him all the best!

Visit our new website to book your very own personal GI Consultant for a 30 minute or 60 minute consultation now!


Call Us:  650-988-7530