Gastroenterology Associates Marks 20-Year Milestone

June 12, 2016

Gastroenterology Associates celebrates 20 years of serving western North Carolina as Board Certified Specialists in Gastrointestinal and Liver Disease.


Founded in 1996 by Dr. Caroll Koscheski and Dr. John Meier, the practice has grown from two doctors with three employees to an eight physician group with more than 50 full and part-time employees.

Gastroenterologists include (shown seated from left) John Meier, MD; Gaa Richardson, MD; Susan Nikrooz, MD; and Caroll Koscheski, MD. Standing from left are Siddharth Sura, MD; Simon Allport, MD; Gregory Diamonti, MD; and Frank Wright, MD. All are board-certified physicians affiliated with Catawba Valley Medical Center and Frye Regional Medical Center.

Dr. Shah

"It is gratifying to see what our practice has become with two decades of hard work by our physicians and employees,” said Dr. Meier.


"We feel we have had a very positive impact on the Hickory medical community and on the lives of our patients. It has been exciting to see major advancements within the GI specialty. We offer a broad range of services not usually available in a community of this size."


A major development in the growth of Gastroenterology Associates was the opening of the first in-office endoscopy facility in the greater Hickory area in 2005. Today, most endoscopy procedures for the practice are performed on-site in the award-winning facility. Colonoscopies, the preferred colorectal cancer screening test, are the primary endoscopic procedures performed at the Gastroenterology Associates endoscopy unit.


"Patients like the privacy of our facility, and our caring staff creates a comfortable atmosphere for each and every patient," said Dr. Koscheski. The practice has safely performed tens of thousands of examinations in the facility since 2005.


“Colon cancer deaths have decreased by about 35% in Catawba County over the last 10 years. Much of this progress is attributable to colonoscopy and awareness of the need for screening,” noted Dr. Koscheski.

“One of the biggest changes we have seen in twenty years is patient and community acceptance for colonoscopy,” explained Dr. Koscheski. “Patients are very proactive today. They understand that screening saves lives and can reduce the risk of colon cancer by 80-90%. Patients call us and say they just turned 50. Let’s get the process started.”


 “Our staff has been instrumental in our growth. We would not have achieved the success we have without their dedication, outstanding service and commitment,” said Dr. Koscheski.

August 4, 2025
Gregory Diamonti, MD, FACG, joined Gastroenterology Associates of Catawba Valley on August 4, 2025. Dr. Diamonti is a board-certified gastroenterologist with 23 years of experience and a Fellow of the American College of Gastroenterology. Most recently, Dr. Diamonti practiced in the Boone area. Prior to that, he was a physician with Gastroenterology Associates in Hickory for 18 years. “It is a privilege to welcome Dr. Gregory Diamonti to Gastroenterology Associates of Catawba Valley,” said Mariane Carna, president of CVHS’ Catawba Valley Medical Group. “With nearly 30 years of experience in gastroenterology and a distinguished record of excellence in patient care, Dr. Diamonti brings invaluable expertise to our practice and the community we serve. His deep roots in the region, combined with his collaborative, patient-centered approach, reflect our mission to deliver exceptional, coordinated care. Working alongside our team of leading GI specialists, Dr. Diamonti will help strengthen our commitment to advancing treatment and innovation in digestive health for the benefit of our patients and their families.” “We are thrilled to welcome Dr. Diamonti back to our practice,” added Stacey Coffey, Chief Administrator – Gastroenterology Associates of Catawba Valley. “He was an integral part of our team of providers for many years. His return strengthens our ongoing commitment to providing exceptional care and improved patient access. This is a huge win for our practice and our community.” Dr. Diamonti received his undergraduate degree from Binghamton University in New York and his medical degree from the State University of New York Downstate Health Sciences University in Brooklyn. He completed his residency and fellowship at Emory University School of Medicine in Atlanta.  Dr. Diamonti holds memberships in the American College of Gastroenterology and the American Gastroenterological Association.
June 4, 2025
Catawba Valley Health System (CVHS) has announced the addition of Gastroenterology Associates, PA, of Hickory to its medical group. The name of the practice has been updated to Gastroenterology Associates of Catawba Valley Health System effective June 1. All services, staff and team of physicians will remain the same,
Dr. Patel
September 3, 2024
Dr. Patel joined Gastroenterology Associates on September 3, 2024. Dr. Patel earned his undergraduate degree in Health Systems Management from Loyola University in Chicago and his medical degree from the University of Pittsburgh School of Medicine. He completed his residency and fellowship training at Barnes-Jewish Hospital/Washington University in St. Louis.
best asc award
May 14, 2024
Gastroenterology Associates Endoscopy Center has been named one of the 12 Best Ambulatory Surgery Centers (ASCs) for colonoscopy and endoscopy in North Carolina by U.S. News & World Report, the global authority in hospital rankings and consumer advice.
Dr. Laderian
September 5, 2023
We are pleased to announce the addition of Behnam Laderian, MD, to our practice. Dr. Laderian joined Gastroenterology Associates on September 5, 2023.
dr. carroll
February 27, 2023
As published in the Hickory Daily Record The newest guidelines from the American Cancer Society recommend people at average risk of colorectal cancer start regular screening at age 45. Previous screening guidelines started at age 50. Studies show rates of colorectal cancer among people younger than 50 are on the rise, according to the American Cancer Society.
dr bradley zins
May 2, 2022
We are pleased to announce the addition of Bradley Zins, MD to our practice. Dr. Zins joined Gastroenterology Associates on May 2, 2022.
endoscopy unit
December 12, 2021
As published in the Hickory Daily Record Gastroenterology Associates endoscopy unit was recently recognized for outstanding quality measures by the American Society for Gastrointestinal Endoscopy (ASGE).
gastro office
September 16, 2021
Hickory Daily Record – September 12, 2021 – Gastroenterology Associates of Hickory marks a major milestone celebrating 25 years in private practice serving western North Carolina as board-certified specialists in gastrointestinal and liver disease.
dr shah
August 2, 2021
We are pleased to announce the addition of Disha Shah, DO to our practice. Dr. Shah joined Gastroenterology Associates on August 2, 2021. She will provide care for patients in the endoscopy center and clinic at Gastroenterology Associates, and hospital patients with Catawba Valley Medical Center and Frye Regional Medical Center.
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