Most Experienced Gastroenterologists

About Us

At Columbia Gastroenterology Associates, we are committed to providing our patients with the most appropriate and cost-effective digestive healthcare available in a comfortable and compassionate setting. Our staff is specially trained to coordinate patient care and ensure that all medical needs are met, making our practice the right choice for those with digestive problems.

Gastroenterologists you can trust:

Celebrating 40 years in business

Board certified physicians

We evaluate and treat a wide range of gastrointestinal and liver disorders

Dr Galan and patient

Express Scheduling Colonoscopy

If you are over 45 and haven’t had a colonoscopy, take advantage of the Express Scheduling by contacting Columbia Gastroenterology Associates. This saves time by eliminating an additional office visit, and, if you have a co-pay, reduces your out-of-pocket cost for exactly the same care and quality treatment.

Save Time and Money - Schedule your colonoscopy without a consultation

So there's no good reason to wait to get checked, and with Express Scheduling there's no need to wait at all. Call 803-799-4800 today for more information.

Conditions We Specialize In

Our physicians have experience treating a wide variety of gastroenterological conditions, the most common of which are below. 


Terry Sims
Terry Sims
a year ago
Excellent from beginning to end. First the Consultation great with Doctor Lowman and Staff. Procedure from beginning to end All Staff in the front, back, Procedure room,Anesthesiologist top of the line, to include Dr.Lowman. Second time Procedure and nothing but Excellence. ...I recommend to anyone.....Everything is totally explained to you in terms you can understand.
Thomas Wilson
Thomas Wilson
7 months ago
So happy to see that Columbia Gastro Associates has incorporated top notch clinical research services into its practice through Colombia Digestive Health Research in partnership with ObjectiveHealth. They provide access to clinical trials for NASH, IBD and more, as an added value. An awesome option, for which patients can get some FREE medical tests and even get paid to participate! I highly recommend talking to your GI doctor about it.
H. T.
H. T.
a year ago
Dr. Postic has really been a great doctor to me. What blew my gratitude for him out of the water was his concern enough to call me on his day off to go over my test results with me. Also, every time I go in he listens to me, makes notes on what I am saying, and offers resolutions and proper follow-ups. I feel like he really cares about me and my well-being. Thank you Dr. Postic!