Gastrointestinal Associates, LLP

Gastroenterology • Columbia, MO

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About

Gastrointestinal Associates, LLP (GI Associates) is a Columbia, Missouri-based specialty gastroenterology practice with eight gastroenterologists offering comprehensive GI services since 1981. Services include colonoscopy, endoscopy, flexible sigmoidoscopy, advanced endoscopy, cap endoscopy, and IV therapy. The practice emphasizes high-quality patient care for routine GI health assessments and targeted treatments. Key details: private ownership, headquartered in Columbia, 4 office locations in the U.S., main contact 1-573-777-8818, website gicolumbia.com.

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Clinic Type

Gastroenterology

Address

210 Portland Street, Columbia, MO 65201

Phone

573-777-8818

Email

info@gicolumbia.com

Opening Hours

8:00 am – 5:00 pm

Website

https://gicolumbia.com/

Services Offered

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Technology & Equipment

Endoscopy
Colonoscopy
Flexible Sigmoidoscopy
Advanced Endoscopy
CAP Endoscopy Smart Pill
Intravenous Infusion IV Therapy

Team

Bradley Anderson — Physician
Robyn Barlow — Physician
Peter Jay Cleavinger — Physician
Kevin Halsey — Physician
Jeremiah Hays — Physician
Nicolas Llorens — Physician
Rita Lutz — Physician
Matthew Struttmann — Physician
Stephen Welsh — Physician
Michael Williams — Physician
Laura Williams — Physician

Insurance & Payment

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Languages Spoken

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Photos

What Patients Say

Overall sentiment across review platforms: mixed

Birdeye: 4.5 out of 5 stars (818 reviews (primarily from Google))

Patients praise

professional and attentive healthcare provided by some doctors
compassionate approach from specific providers (e.g., Dr. Rita, Dr. Halsey)
staff described as knowledgeable and courteous by some patients
comfortable and pleasant office atmosphere

Common complaints

long wait times for appointments and referrals
administrative and paperwork processing delays
difficulties in obtaining timely responses from support staff/scheduling inefficiencies
concerns regarding billing/financial focus versus patient care
occasional reports of unprofessional or poor bedside manner

"Among the worst medical "professionals" I have ever encountered. They are all about the money, not the patient. When I switched doctors they failed to promptly send my medical history..."

— Birdeye (Reviewer: Crystal S.)

"Reviews frequently highlight the compassionate approach of Dr. Rita and Dr. Halsey, who take time to thoroughly explain medical conditions and make patients feel at ease."

— Wheree.com

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026. Own this clinic? Claim or correct this listing.