Welcome to
Western Gastroenterology
For over 40 years, our lead physician Dr. Sylvain Sidi has been dedicated to diagnosing, treating and helping prevent gastrointestinal and liver diseases.
Digestive health for better living.
We specialize in diagnosis, treatment, and prevention
of gastrointestinal and liver diseases.
Welcome to
Western Gastroenterology
For over 40 years, our lead physician Dr. Sylvain Sidi has been dedicated to diagnosing, treating and helping prevent gastrointestinal and liver diseases.

The latest in diagnosis, treatment, & prevention

Dr. Sidi is a concierge GI doctor without extra fees

Mission statement:

42 years of GI experience dedicated to my patients with 4 defining characteristics: availability, compassion, empathy and expertise.

Digestive Care

Digestive Care

Digestive problems can be painful. Regardless of how acute or chronic, we are committed to improving your health through high-quality, efficient and accessible gastroenterology care.

Colon Cancer Screening

Colon Cancer Screening

Screening for prevention and early detection of colon cancer is crucial. Dr. Sylvain Sidi has been educating the community on colon cancer for decades, diagnosing and treating all ranges of patient needs. We have developed a customized program for each patient.



We perform a broad range of outpatient diagnostic, therapeutic and endoscopic procedures. We work with various medical centers and outpatient facilities to ensure that your experience with us is relaxed and worry-free, from the initial consultation through performance of expert endoscopic procedures, recovery and follow up.

Pancreatico-Billiary Tract and Liver Diseases

Pancreatico-Billiary Tract and Liver Diseases

Up to date evaluation of hepatitis, chronic liver diseases and pancreatico-biliary diseases. Diagnostic and therapeutic advances.


  • Expert GI/Liver Disease Consultation/Fibroscan
  • Hepatitis B, C Diagnosis and Treatment
  • Diagnostic and Therapeutic Colonoscopy
  • Therapeutic Upper Endoscopy
  • Therapeutic Biliary Pancreatic Endoscopy /ERCP / Stent Placement
  • Hemorrhoid Treatment

Special Interests

  • Therapeutic Pancreatic Biliary Endoscopy
  • Advances in Inflammatory Bowel Disease Therapies
  • BRAVO Capsule Endoscopy
  • Esophageal Dysmotility Disorders
  • Anorectal Dysmotility Disorders
  • Hepatitis B / C Advances in Therapy
  • Bariatric Endoscopy

We’re rated and featured on…

#1 Rated Gastroenterologist (RateMDs)


A great video, courtesy of Vitals

What patients are saying…

  • I have suffered with Stomach related issues for over a month, and have seen multiple different doctors; most have "treated and street[ed]" me. This is the first Doctor who actually cared enough to spend time. ask questions and logically come up with a solution without jumping to conclusions.

    Jennifer P. Patient
  • We've been to many doctors over the last year trying to find out what's wrong with our daughter Katie and have almost giving up hope.Thank goodness we found Dr.Sidi and on our first visit he spent 40 mins or so just listening to us and then reassured our daughter that he would try to find out what's wrong with her. For the first time in a year she has hope.

    The Zara Family Patient
  • Dr. Sidi was very thorough, knowledgeable, caring, patient, and spent a good amount of time with me explaining everything. I would definitely recommend him to anyone seeking a gastroenterologist.

    Terrance N. Patient
  • I can tell you with absolute honesty, that my colonoscopy preparation and the actual procedure were non-events in my life, save for the peace of mind I now enjoy. The peace of mind I now enjoy makes the entire episode one of the best time investments I have ever made with little or no discomfort or interruption to my normal routine.

    Grateful Patient Patient

Proudly Affiliated Hospitals


About Dr. Sidi

Dr. Sylvain Sidi is an expert gastroenterologist who has been practicing for over 40 years. He is quadrilingual, fluent in French, Spanish, Italian, and English. His practice has been successful in Tucson, Arizona, where he has been rated highly by patients and their families. Dr. Sidi is affiliated with St. Joseph’s – Carondelet Health Network, Banner Network and Cura Health Networks.

“My professional life is dedicated to the well being of my patients using a combination of availability, compassion, empathy and expertise. this has served me well over the past 42 years of practice. earning  the recognition of countless grateful patients.”


  • American Board of Gastroenterology, 1979
  • American College of Gastroenterology, 1981 (Fellow)
  • American Society for Gastrointestinal Endoscopy, 1978
  • American Society for Laser Medicine & Surgery, 1984 (Fellow)
  • Societe Nationale Francaise de Gastro-Enterologie


310 North Wilmot Rd., Suite #202
Tucson, Arizona 85711

Visit Our Clinic

Monday – Friday: 8:30 am – 5:00 pm


(520) 885-7600

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Contact Us

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