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Jan 22, 2026 | Uncategorized

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Office Appointments

Clearwater Gastroenterology

2517 17th Street, Suite B
Lewiston, ID 83501

Procedure Appointments

Gem State Endoscopy

3709 14th Street
Lewiston, ID 83501

Clearwater Gastroenterology and Gem State logo

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.

Contact Clearwater Gastroenterology



Clearwater Gastroenterology

2517 17th Street, Suite B
Lewiston, ID 83501



Phone: 
208-743-4373

Fax: 208-743-3369



Monday - Thursday
8:00 am to 5:00 pm
Friday
8:00 am to 2:00 pm

Contact Gem State Endoscopy



Gem State Endoscopy

3709 14th Street
Lewiston, ID 83501



Phone: 208-298-2141

Fax: 208-746-3144



Monday - Thursday
8:00 am to 4:00 pm
Friday
8:00 am to 2:00 pm

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