Gastroenterology Specialists, Inc

Gastroenterology Specialists, Inc Gastroenterology Specialists, Inc. is an independent practice and ambulatory surgery center offering Established in 1983, Gastroenterology Specialists, Inc.

is an independent specialty practice offering a full array of gastrointestinal treatments including colonoscopies, upper endoscopies, capsule endoscopies, infusions, medications, and dietary management. Our team of eight physicians bring years of experience and training to provide fast, accurate, and comprehensive diagnosis and treatment. Each of our physicians is board certified by the American Board of Internal Medicine in Internal Medicine and Gastroenterology. Since 2005, GSI has tracked endoscopy quality measures like quality of preparation, completeness of the procedure, polyp detection rates, and patient comfort. Tracking this data reveals how well our providers take care of our patients. Even though we consistently meet or exceed national benchmark rates, we continually analyze our quality measure rates and strive for better outcomes. Our commitment to providing the highest quality care is evidenced by our receipt of the Joint Commission Gold Seal of Approval. Joint Commission accreditation is recognized nationwide as a symbol of quality that reflects an organization’s commitment to meeting performance standards in patient rights, patient treatment, and infection control. To maintain accreditation, GSI voluntarily undergoes rigorous surveys to demonstrate compliance in every area of our practice. To learn more about the Joint Commission, visit their website here. The Joint Commission can be contacted for questions or concerns at: 1-800-994-6610.

GSI is pleased to welcome Dr. Aaron Fieker, DO, to our practice.Dr. Fieker has been serving patients in the community si...
05/21/2025

GSI is pleased to welcome Dr. Aaron Fieker, DO, to our practice.
Dr. Fieker has been serving patients in the community since 2016, previously practicing at St. Francis before joining our team. He is board certified in gastroenterology by the American Board of Internal Medicine.

To schedule an appointment with Dr. Fieker, please call our office at (918) 940-8500 or submit a referral online.

04/07/2025

We are currently hiring for a full time Medical Assistant or LPN position for a clinic opening in May in Bartlesville. Please email resumes to sroach@gsitulsa.com.

02/18/2025

❄️🌨️ ❄️ Due to current weather conditions, GSI will be open limited hours today and tomorrow. GSI is open from 7am to noon today. Tomorrow, GSI will be open from 10am to 2pm. We anticipate resuming normal business hours this Thursday. ❄️🌨️❄️

07/18/2024

We will be updating our phone system today from 10:30-12:30. You will be unable to reach us during that time. We appreciate your patience while we make this change!

Address

10210 East 91st Street South
Tulsa, OK
74133

Opening Hours

Monday 7am - 4pm
Tuesday 7am - 4pm
Wednesday 7am - 4pm
Thursday 7am - 4pm
Friday 7am - 4pm

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