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Welcome to Gem State Endoscopy
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Dedicated to providing Gastroenterology care that betters the entire community since 1986


Clearwater Gastroenterology provides these  services to our patients:


Clearwater Gastroenterology is a specialty gastroenterology medical practice located in Lewiston, Idaho.  Gem State Endoscopy is our associated Ambulatory Surgical Center where Dr. Dettwiler performs the majority of his procedures. Both Clearwater Gastroenterology and Gem State Endoscopy were founded by Carl Dettwiler, MD and are committed to providing affordable care that improves and enhances the entire community.


Community Involvement

Each year during March which is Colon Cancer Awareness Month, Clearwater Gastroenterology, Gem State Endoscopy and Pathologist's Regional Laboratory team up to offer no-cost screening colonoscopies to those in need. We work with groups throughout the community to find those who meet the criteria and are without medical insurance. For more information about screening colonoscopies, please contact us!

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