Call Us:  650-988-7530


During this time you can still consult your specialist via telemedicine or in the office. Please contact our office at (650) 988-7530 for more information or email us at or Stay safe! 

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 211

Mountain View, CA 94040

Tel: 650-988-7530

Fax: 650-396-5566


Contact Us

Motility Center

Silicon Valley Gastroenterology also offers the state of the art Silicon Valley Neurogastroenterolgy and Motility Center. 

The Silicon Valley Neurogastroenterology and Motility Center incorporates 20 years of unique profess​ional experience with highly sophisticated and effective modern technologies to diagnose and manage gastrointestinal motility disorders.​                                    Read More

Silicon Valley Gastroenterology's

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.


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.

Our Services

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 Monday through Friday to help schedule an appointment for you. Please call (650) 988-7530 for scheduling.

Appointment Request

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!