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Gastrointestinal Associates, LLP

4.5 out of 5 · 818 reviews

Gastroenterology • Columbia, MO

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.

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

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.

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