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Gastroenterology Associates

Upstate SC

Timely Relief

for Digestive Discomfort

Gastroenterologists who will listen.

Low-cost &
high-quality care
Urgent cases can be
seen within 24 hours
Timely answers to your
digestive issues

Find The Problem

Don’t Let Digestive Discomfort Control Your Daily Life!

Experiencing unusual digestive discomfort can cause pain and anxiety, making you self-conscious about your symptoms.

5

Convenient Office Locations

In the Upstate of South Carolina

4

Endoscopy Centers

With state-of-the-art equipment

5

In-House Labs

Offering convenient access for lab work

Our Polyp Detection Rate Exceeds the National Average
0 +
Procedures at Our Endoscopy Centers

Each Year

0
Board-Certified Physicians

3

Female Physicians

8

Nurse Practitioners

4

Physician Assistants
Verified Patient
Verified Patient
Dr Palma was very pleasant when he introduced himself to me, he made me feel like I was in good hands. He was very punctual, the procedure went well, the entire staff was superb.
Verified Patient
Dr Mazanec is truly an exceptional gastrologist! He takes the time to listen, explains everything clearly and makes you feel completely comfortable. Tammy is absolutely wonderful ! She goes over and beyond in supportive of patients. It’s rare to find a medical team that combines such professionalism with genuine compassion. I am incredibly grateful to be in such capable hands. I highly recommend this practice!!!
Verified Patient
Dr. Jones is an outstanding gastroenterologist. He is attentive, takes time to truly listen, and is very proactive in addressing concerns and developing a treatment plan. I never feel rushed during appointments, and he always makes sure my questions are answered. It is clear that he genuinely cares about his patients and providing excellent care. I highly recommend him.
Verified Patient
I honestly wanna give compliment about Dr. Madigan, I was so nervous going into this procedure but the moment the RN came in to do my iv I was so nervous then I seen Dr. Madigan and she verified that if I had any questions, she would answer them before the procedure. Dr . Madigan was honestly the best I do not feel any pain any discomfort and even my parents had said she seemed like a very lovely person so that says a lot and I do trust Dr. Madigan and recommend her for all your Gastro needs!!!!
Verified Patient
Initially, I dreaded the procedure, but the prep was much easier this time. And, once I arrived, I didn't have to wait. I was taken back promptly by a friendly staff. Dr. Jones was professional, conversational, and amiable. His explanations were helpful. I appreciated the skilled care.
Verified Patient
Dr. Vitorsky is awesome. She listens and is very caring. The entire staff is very kind.
Verified Patient
Staff was great and informative. Dr Gaines gave me ample opportunity to ask questions. Nice clean facility.

Why Choose Gastroenterology Associates?

  • We’re the largest GI practice in South Carolina.
  •  We are a physician owned practice.
  •  Our Open Access Program makes it easy for you to schedule a screening procedure.
  • Our providers serve Prisma Hospital System and Pelham Medical Center.
    • Your provider has access to your medical records from both hospital systems.
  • We participate in Prisma Health Upstate Network, an Accountable Care Organization.​
  • Having your colonoscopy at an ambulatory surgical center can be up to 75% cheaper than at a hospital setting.​

Get the timely answers you need to improve your health.

We are committed to seeing urgent cases within 24-48 hours.

What is a polyp detection rate?

Adenoma Detection Rate (ADR) is the measurement that best reflects how carefully a doctor performs a colonoscopy. This rate is the percentage of patients undergoing a screening colonoscopy who have one or more precancerous polyps detected.

Gastroenterology Associates has an average ADR of 37% with a 43% ADR in males and 31% ADR in females.

Gastroenterology Associates

Upstate South Carolina

Patient Portal

Better Healthcare. Better Results.

  • Eliminate time-consuming phone calls
  • Get fast & private communication with our clinical staff
  • View, download & share your personal health record (including medications, immunizations & test results)
  • Get appointment reminders
  • Request prescription refills
  • View lab, pathology and procedure results
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Our Clemson and Spartanburg locations (Office, Endo Center, and Lab) will be closed March 16–20, 2026.

During this time, patients needing lab work—including stool kit drop-off—may visit our Halton Road, Augusta Road, or Simpsonville offices. For urgent needs, you may also visit a Quest Diagnostics location.

Thank you! We appreciate your understanding!

     (864) 232-7338
     gastroassociates.com

Research Study Now Enrolling

Past, Present & Future Trials:

  • Ulcerative Colitis
  • Crohn’s Disease
  • Non-interventional registries
  • Colorectal Cancer Screening
  • Celiac Disease
  • Hemorrhoids (coming soon!)
  • Anal Fissures (coming soon!)

Save Time & Money

Schedule a screening colonoscopy now without an office visit