No Referral Required

Office Location
Endoscopy Center
In-House Lab

Office & In-House Lab

3424 Augusta Road, Suite 200
Greenville, SC 29605

M – Th: 8:00 am – 5:00 pm
Friday: 8:00 am – 12:00 pm

Endoscopy Center

3424 Augusta Road, Suite 100
Greenville, SC 29605

Verified Patient
I highly recommend this practice and Dr Geist who did my procedure today. He's an excellent doctor. I went for my first colonoscopy at 61 and from beginning to end was very impressed with the entire staff here. I got in right away and the procedure was done much sooner than expected due to how well this facility is run. Everyone was professional, knowledgeable, friendly and reassuring. Throughout the entire process they explain what's happening and check with you to make sure you're good. I won't need to go back for 10 years, but when I do this is where I'll go. Thanks!
Verified Patient
Dr. Mazanec is one of those doctor you dont too often. He doesn't give up on you. Ive seen him for many years and he found cancer in my colon . Its a very long story. He just not give up when he knows hes right. And proven to be right. I wouldn't trust anyone else for this care.
Verified Patient
The whole staff at GEC did an amazing job, from registration to wheeling me out the door. Dr Saha was very kind, professional and explained the procedure and results well. Highly recommend them!
Verified Patient
I had a very pleasant experience at Gastroenterology Associates - Augusta Road. The staff was professional, welcoming, and attentive from start to finish.

Jennifer Garren was especially knowledgeable about the colonoscopy procedure and provided clear, practical information that addressed my personal concerns about the preparation process. She took the time to explain the importance of maintaining regular bowel movements and made sure I understood why it matters for overall health.

Most importantly, they eased my anxiety by thoroughly answering all of my questions and ensuring I felt informed and comfortable. I truly appreciate the care I received and would highly recommend this practice to anyone seeking compassionate and professional gastrointestinal care.
Verified Patient
I'm very pleased with my visit 😊 Teresa Truman ask questions concerning my symptoms and listen to all my concerns. Together we develop a plan on how to move forward. She was very easy to talk to as well as a great listener.
Verified Patient
I had an excellent experience at this GI office for my endoscopy. From the moment I walked in, the staff was welcoming, professional, and incredibly efficient. Check-in was smooth, and the nurses took the time to explain everything clearly, which immediately put me at ease.

The physician was outstanding—thorough, calm, and happy to answer all of my questions without making me feel rushed. The procedure itself went seamlessly, and I truly felt I was in capable, experienced hands the entire time.

Medical procedures can be stressful, but this team made it as comfortable and reassuring as possible. I’m very grateful for their care and would absolutely recommend this office to anyone needing GI services.
Verified Patient
I have always had a great experience with this group for my Gastro needs. Dr Horton is my doctor and he is truly kind, knowledgeable, compassionate and such a great listener…just a wonderful doctor. I feel he genuinely cares about me and his other patients. His nurses and all of the staff at the office are courteous and professional. You will be very pleased with Dr Horton and your experience at Gastroenterology Associates!
Verified Patient
Procedure was fine. The anesthesiologist caused me pain when administering the medicine into my IV. Nurses were nice. Facility was nice and clean
Medical Phone Calls

A nurse is available to help answer questions Monday through Thursday 8:00 AM – 5:00 PM, and on Friday from 8:00 AM – 12:00 noon. When you call, please give the receptionist your name, date of birth, Social Security number, phone number and a brief message. The nurse will make every effort to respond within 24 hours. Please allow two weeks from the date of your procedure before calling the office for radiology or pathology results. A nurse will contact you if your results require an urgent response. If you have an urgent medical condition, please notify the receptionist so that your call can be handled properly.

Emergencies After Office Hours

For emergencies occurring after office hours, please call the office at (864) 232-7338. The answering service will take your call and give the information to the doctor. If your call has not been returned within one hour, notify the answering service that you have not received a return call.

Urgent Medical Attention

If you need immediate medical attention, call 911 for assistance.

Get a timely medical evaluation, diagnosis, and treatment from a

Gastroenterologist who will listen.

No Referral Required

3424 Augusta Road
Greenville, SC 29605

Office is located 0.6 miles off Interstate 85 on Augusta Road. Directly beside Furniture Marketplace.

3424 Augusta Road
Greenville, SC 29605

Office is located 0.6 miles off Interstate 85 on Augusta Road. Directly beside Furniture Marketplace.

Gastroenterology Associates

Upstate South Carolina

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