Your Gastroenterologists in Los Gatos

We are here to assist you. Either for a routine procedure or for a consultation, let us know how we can help.

0 000

new cases per year

Data on Colon Cancer in the United States

Colorectal cancer represents a growing challenge for public health in the United States. With rising mortality rates among young people and changes in screening guidelines, continuous awareness of the importance of early detection and associated risk factors is essential.

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About us

Who we are

Founded in 2012, our practice is part of the California’s largest gastroenterology group, dedicated to high-quality, patient-centered care.

Our specialists diagnose and treat conditions affecting the esophagus, stomach, colon, liver, intestines, gallbladder, pancreas, and biliary tract. We ensure continued access to expert, compassionate care in a private practice setting.

We offer a range of services, including colonoscopy, upper endoscopy, endoscopic ultrasound, and ERCP. Visit our services page for a full list.

Through the collaborative and compassionate efforts of our board-certified physicians and staff, our physicians seeks to deliver high quality, cost-effective and patient-centered care for digestive diseases and disorders.

Our Mission

colon cancer

Almost 2 million new cases of colorectal cancer occur annually, accounting for approximately 10% of all diagnosed cancers worldwide. Unfortunately, the incidence continues to increase.

The American Cancer Society recommends average-risk people start screening at age

*Depending on family history, screening may be recommended at age 40 or younger1

The American Cancer Society recommends average-risk people start
screening at age 45

*Depending on family history, screening may be recommended at age 40 or younger.

Treatment

What we offer

Cancer Screening

Cancer screening for the colon and stomach detects early signs of cancer using tests like endoscopy and colonoscopy. Early detection increases treatment success and improves survival rates.

Endoscopy

Endoscopy is a minimally invasive procedure using a flexible tube with a camera to examine internal organs, like the stomach and intestines. It’s done under sedation for comfort.

Colonoscopy

Colonoscopy is a minimally invasive procedure using a flexible tube with a camera to examine the colon for polyps, inflammation, or cancer. It’s done under sedation for comfort.

Breath test

The SIBO breath test detects small intestine bacterial overgrowth by measuring gas levels after ingesting a sugar solution. It’s a non-invasive diagnostic tool for digestive issues.

Fibroscan

FibroScan is a non-invasive painless test that estimates the amount of scar tissue and fat content using ultrasound technology. It helps to detect liver diseases before cirrhosis occur.

EUS and ERCP

EUS (Endoscopic Ultrasound) and ERCP (Endoscopic Retrograde Cholangiopancreatography) are advanced procedures used to diagnose and treat diseases not commonly observed by conventional procedures.

Cutting-Edge Technology

AI polyp and cancer detection

Why Should Us

Why Choose Us? Exceptional Care with Advanced Gastrointestinal Solutions

Significant experience in the field of Gastrointestinal Disease

Diagnosis and Individualized Treatment

Fast scheduling

Cutting-edge technology

Our Providers

Health Plans

Medical Assistance

FAQs

How do I make an appointment?

Simply call us at (408) 471-9900 during our working hours or you can request an appointment online using this email.

Do I need a referral to make an appointment?

Most medical specialists will accept only referred patients. This is mainly to try to ensure that the specialist you are seeing is appropriate for you and your condition. Ask our office staff if a referral is needed.

What to bring for your initial consultation?

For your initial consultation you will need to bring a referral letter from your physician if required.

Here is check list for your initial consultation:

Driver’s License or a valid ID
Insurance information
Referral Letter (if required)
Reports, X-rays, MRIs, CT scans, etc. and any other relevant information
List of medications (if any)

We encourage you to come to your initial consultation with a written list of questions to ensure you don’t forget to ask them when you visit the doctor.

Are my medical records kept private and confidential?

Your medical file is handled with the utmost respect for your privacy. Our staff is bound by strict confidentiality requirements as a condition of employment regarding your medical records. We will not release the contents of your medical file without your consent.

How do I contact after hours?

There will be a point of contact 24 hours a day for any concerns you may have. You will be provided with contact details following your treatment.

Our patients Feedback

What our patients are telling us

The staff are friendly and caring from the time you arrive until you are ready to leave. Very professional and answer all the questions you may have.

My first visit exceeded my expectations. Everyone I dealt with was highly professional, extremely competent, and friendly. I feel I'm on my way to dealing effectively with my gastro issues.

Thank you for your help Matt. You’re friendly, easy to talk with and very professional. This is my first time visiting this office and really impressed of how nice that the staffs treated me. Happy Halloween. Nice costumes everyone at front desk.

Dr. Eduardo Da Silveira is a wonderful and caring physician. I feel he knows his patients and helps heal them . I’m 100% better than I was 2 years ago!

Dr. Nguyen and her staff are absolutely wonderful. We had our first visit with Dr. Nguyen and know we made the right decision to go to her office. Professional, knowledgeable, friendly & a very easy process. Thank you!!!

Dr. Michelle Nguyen is one of my fave doctors ever. She is everything you'd want in a doctor - caring, thorough, knowledgeable, knows how to get to the right info from you, on top of her game, great bedside manner and more. I've also only had good experiences with the office staff.

I wasn’t even on the bed to get prepped for my procedure when a nurse was right behind me with a warm blanket that was so unexpected and so very much needed, I was freezing thank you so much for your consideration. All of the staff was so welcoming and courteous. You definitely all compliment each other. Thank you again

I am a new patient for Dr. Da Siveira and my initial appointment was amazing. The office is super clean and well staffed. The staff were efficient, knowledgeable, considerate and friendly. Dr. Da Silveira was extremely thorough and had great “bed-side manner.” I highly recommend him as a specialist.

WOW Got so Lucky to visit Matthew Ross GI Clinic he was so knowledgeable, with No Rush he listen to all I had to say performed examination, and he was so Kind just having visited him I feel so healthy all my Pains Gone. He is best if the best. Thank you Matthew and God Bless you. You are so blessed that God has given your hands the healing Power. Merry Christmas and Thank You once again from bottom of my heart.

Anne Liao, NP is knowledgeable, friendly and took her time listening to my concerns. she was very thorough with her review. I will definitely ask to see her again for my next visits.

Miss Liao is an extremely competent nurse practitioner. She took the time to review my particular medical issue using some computer graphics to explain the problem and its solutions. She assisted me with the follow up by providing the attending physician with a written comment of her observations and the probable treatment. Add to this, she is a charming young lady with superb professional skills

Ann Liao is an excellent health care professional with comprehensive knowledge of the medical information I needed to treat my gastro issues. She's a clear communicator and friendly personality. Highly recommended, and I'm tough to impress.

Consistent high quality care provided by Dr. Ganna and Anne Liao, NP. Anne is very responsive to messages in the new online portal, making communication very timely and convenient. Office staff are professional. I’ve been under their care for almost 3 years and have always had a pleasant experience.

I was lucky to get a quick appointment with Dr. Gannavarapu. He was extremely patient, answered all my concerns, and spent a lot of time discussing possible treatments with me. What I really appreciated was the way he didn't rush into an immediate diagnosis or temporary fix and wanted to take the time to fully treat me to really find out what the root cause of my symptoms was.

Dr. Garcia is absolutely great! He spent extra time explaining my symptoms and proposed a course of action. I am very happy with my office visit!

I've been a Patient of Dr Garcia since 2010 and wouldn't want anyone else to deal with my issue. He is thorough and doesn't sugar coat anything. His bed side manner is spot on and his staff are very helpful and willing to help. Thanks Dr Garcia!

Your Gastroenterologists in Los Gatos

new cases per year

Data on Colon Cancer in the United States

Please provide your information so we can expedite your appointment

Who we are

Almost 2 million new cases of colorectal cancer occur annually, accounting for approximately 10% of all diagnosed cancers worldwide. Unfortunately, the incidence continues to increase.

What we offer

Cancer Screening

Endoscopy

Colonoscopy

Breath test

Fibroscan

EUS and ERCP

AI polyp and cancer detection

Why Choose Us? Exceptional Care with Advanced Gastrointestinal Solutions

Significant experience in the field of Gastrointestinal Disease

Diagnosis and Individualized Treatment

Fast scheduling

Cutting-edge technology

Our Providers

Michelle Nguyen, MD

Eduardo da Silveira. MD

Ruel Garcia, MD

Bhargava Gannavarapu, MD

Anne Liao, NP

Matthew Ross, NP

Health Plans

FAQs

What our patients are telling us

We look forward to hearing from you soon

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