Advanced Gastroenterology

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555 Marin St Ste 270
Thousand Oaks, CA 91360

Dr. Gilbert Simoni and the Advanced Gastroenterology team based in Thousand Oaks, CA, have been dedicated to providing top-notch gastrointestinal care to Southern California for over a decade. Dr. Simoni, a respected member of the California Medical Association, leads the practice with a focus on early detection and utilizing the latest treatments.

As the founder of Advanced Gastroenterology, Inc. and Advanced Digestive Center of Southern California, Dr. Simoni prioritizes understanding each patient's unique symptoms to tailor the best treatment options. His patient-centric approach is evident in the compassionate care provided by the entire Advanced GI team, ensuring a supportive and thorough experience for all patients.

With a commitment to quality medical care, Dr. Simoni's leadership extends to his role as the President of the Ventura County Medical Association. Patients across Thousand Oaks, Camarillo, Westlake Village, and beyond trust Advanced Gastroenterology for personalized, expert care that prioritizes their well-being above all.

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Reviews

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3.585 reviews
Photo of Jess P.
Jess P.
3/26/2025

Dr. Simoni and Fernanda are wonderful clinicians...excellent bedside manner, great listeners, and so kind! I will be recommending this office to my friends and family as well. Top notch care!

Jonathan T.
7/2/2025

Friendly staff, reliable, great experience. The GI doc, ultrasound tech, front desk staff, and nurse practitioner are all really friendly and helpful

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Omar A.
3/24/2025

Care is quick and easy. Staff is courteous and helpful. Was in and out so darn quick today for my FibroScan. Thank you!!!

Laila N.
12/4/2024

Dr Simoni and is staff are amazing! The staff are very friendly, kind and professional. Dr. Simoni is great! He listens to you, takes time to answer questions and explain everything, and is a...

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Ruzbeh S.
12/19/2023

Everything went easy , smooth and well after my first call to the office and spoke to Cermina, she did everything fast and finally at the visit time Zoe did professional and friendly service for...

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