At Gastroenterology Associates, your health is our priority.  We are committed to the highest safety standards for our patients, staff, and community.

COVID-19 Update: Our Endoscopy Center and Clinic are open for business. We are taking extra precautions for the safety of our patients, staff, and community.  We are continuing to adhere to our strict infectious disease prevention protocols and following CDC guidelines. We are closely monitoring all updates in relation to the identification and management of the coronavirus COVID-19.

Our team members are taking extra steps to keep you safe from COVID-19 while you are here.

  • Screenings: All patients and team members receive a temperature screening prior to entering the endoscopy center or clinic.
  • Clean facilities: We are disinfecting public areas and removing all materials from our waiting areas that cannot be disinfected.
  • Appropriate personal protective equipment (PPE): All team members are required to wear appropriate PPE, such as masks and gloves.
  • Masks for patients: All patients are asked to wear a mask or facial cloth over their face while in the endoscopy center or clinic to reduce the spread of infection.
  • Visitors: If you bring someone with you for your appointment we ask that they wait in the car.
  • Social Distancing: Appointments will be managed to allow social distancing between patients. This may mean fewer time options for scheduling your appointment or procedure.

Our “virtual” clinic is OPEN through Telehealth visits through ZOOM.  This allows patients to “visit” with the doctor with or without video, which is currently covered by most insurances. It’s simpler than you think. Your doctor will determine if a telehealth visit is appropriate for you. Please call our office if you wish to set up a traditional office or Telehealth visit. We continue to be available 24/7 for emergencies and inpatients at Catawba Valley Medical Center and Frye Regional Medical Center. We will support our patients and their families during the COVID-19 pandemic, and we will update you as our status changes over the upcoming weeks and months.

A video for installing Zoom can be viewed here.

Meet Our Providers

Caroll Koscheski, MD, FACG

Caroll Koscheski, MD, FACG

Dr. Koscheski has been in practice in Hickory since 1991. He received his undergraduate degree from the University of Oklahoma. Dr. Koscheski received his medical degree from Louisiana State University, where he completed his residency and fellowship. He is board certified in gastroenterology and is a Fellow of the American College of Gastroenterology. He has served as Chief of Staff at Frye Regional Medical Center in Hickory. Dr. Koscheski completed two terms for the American College of Gastroenterology (ACG) as Governor for the State of North Carolina. He continues to serve ACG as a member of their Board of Trustees. Recently, he received the American College of Gastroenterology William D. Carey Award in honor of his years of distinguished service to the Board and the College, including leadership positions, participation in educational efforts and committee service. Dr. Koscheski has also been selected by his peers to the “Best Doctors in North Carolina” list.


John Meier, MD, FACG

John Meier, MD, FACG

Dr. Meier joined in practice with Dr. Koscheski in 1994. A native of Atlanta, Dr. Meier received his undergraduate degree from Duke University and his medical degree from the Medical College of Georgia. He completed his residency and fellowship at Fitzsimons Army Medical Center in Aurora, Colorado. He is board certified in gastroenterology and is a Fellow of the American College of Gastroenterology. Dr. Meier has been selected by his peers to the “Best Doctors in North Carolina” list. He also received the Patients’ Choice Award presented by Vitals.com in recognition of the difference he has made in the lives of his patients, an honor given to physicians who received near perfect scores as voted by their patients. He and his wife, Kelly, have two children.


Simon Allport, MD

Simon Allport, MD

Dr. Allport joined Gastroenterology Associates in 1999. A native of England, he received his undergraduate and medical degrees from the University of London. He completed his residency at Good Samaritan Medical Center in Phoenix, Arizona, and his fellowship at Emory University School of Medicine in Atlanta. He is board certified in gastroenterology. Dr. Allport has been selected by his peers to the “Best Doctors in North Carolina” list. He also received the Patients’ Choice Award presented by Vitals.com in recognition of the difference he has made in the lives of his patients, an honor given to physicians who received near perfect scores as voted by their patients.


Gaa Richardson, MD

Gaa Richardson, MD

Dr. Richardson joined Gastroenterology Associates in 2008. Following undergraduate training at New York University and Louisiana State University, she received her medical degree from the University of Alabama in Birmingham. Dr. Richardson completed her residency and fellowship at Saint Louis University in St. Louis, Missouri. She is board certified in gastroenterology. Dr. Richardson resides in Hickory.


Susan Nikrooz, MD

Susan Nikrooz, MD

Dr. Nikrooz joined Gastroenterology Associates in 2009. She is a native of Lincolnton, NC. She received her undergraduate degree from the University of North Carolina at Chapel Hill. She received her medical degree from East Carolina University Brody School of Medicine. Dr. Nikrooz completed her residency in internal medicine and fellowship in gastroenterology at Virginia Commonwealth University. She is board certified in gastroenterology. Dr. Nikrooz has been selected by her peers to the “Castle Connolly Top Doctors Central Carolina” list. She also received the Patients’ Choice Award presented by Vitals.com in recognition of the difference she has made in the lives of her patients, an honor given to physicians who received near perfect scores as voted by their patients. She and her husband, Ali, have two children.


Siddharth Sura, MD, MPH

Siddharth Sura, MD, MPH

Dr. Sura joined Gastroenterology Associates in 2014. Dr. Sura grew up in Apex, NC. He received his undergraduate and medical degrees from the University of North Carolina at Chapel Hill. He earned his master of public health degree from Johns Hopkins University Bloomberg School of Public Health in Baltimore. Dr. Sura completed his residency and internship at Harvard Medical School Beth Israel Deaconess Medical Center in Boston. He completed his gastroenterology fellowship at Emory University School of Medicine in Atlanta. Dr. Sura is board certified in gastroenterology. He and his wife, Aarti, have two children.


Kristen Mussari, MD

Kristen Mussari, MD

Dr. Mussari joined Gastroenterology Associates in August 2019. Dr. Mussari is a native of Pennsylvania where she completed her medical training. She earned her undergraduate degree from the University of Pittsburgh. She received her medical degree from Geisinger Commonwealth School of Medicine in Scranton. After completing an internship and residency at Penn State Health Milton S. Hershey Medical Center in Hershey, Dr. Mussari went on to complete a fellowship in gastroenterology at Allegheny Health Network in Pittsburgh. Dr. Mussari is board certified in gastroenterology. She and her husband have two children and reside in Hickory.

Justin Ellis, PA-C

Justin Ellis, PA-C

Justin joined Gastroenterology Associates in 2015 and brings more than fifteen years experience as a physician assistant to the practice. He grew up in Statesville, NC. He received his undergraduate degree in biology from Campbell University in Buies Creek. He completed his physician assistant program at Mountain State University in Beckley, West Virginia. Justin is board certified by the National Commission on Certification of Physician Assistants and licensed in the state of North Carolina. Justin is certified in Basic Life Support (BLS) and Advanced Cardiac Life Support (ACLS). He and his wife, Shelia, have four children.


Diane Scaife, ANP-BC

Diane Scaife, ANP-BC

Diane joined Gastroenterology Associates in August 2016 as a licensed adult certified nurse practitioner. Prior to joining Gastroenterology Associates, Diane gained extensive experience as a certified nurse practitioner with gastroenterology practices in Shelby, NC and Toledo, Ohio. She began her career as a registered nurse at Mercy St. Vincent Medical Center in Toledo, Ohio, working in critical care, then later served there as a certified nurse practitioner for trauma patients. She is a graduate of the University of Toledo College of Nursing, where she also earned a master’s of science degree in nursing. A member of the American Academy of Nurse Practitioners, Diane is certified in Basic Life Support (BLS) and Advanced Cardiac Life Support (ACLS), and a two-time recipient of Nursing Excellence Awards for Patient Care. She resides with her husband in Kings Mountain.


Kristie Ennis, PA-C

Kristie Ennis, PA-C

Kristie joined Gastroenterology Associates in August 2018. She brings more than ten years of experience as a gastroenterology physician assistant to the practice. Previously, she was a physician assistant with a gastroenterology practice in the Charlotte region caring for patients at four hospitals. Kristie also served as a medical assistant with an internal medicine practice in Statesville. Kristie is board certified by the National Commission on Certification of Physician Assistants and licensed in the state of North Carolina. She is a member of the American Academy of Physician Assistants and Certified in Basic Life Support (BLS) and Advanced Cardiac Life Support (ACLS). Kristie earned her undergraduate degree from Elon University in biology and a Masters of Medical Science-Physician Assistant from Wake Forest University.

CALL TODAY TO SCHEDULE A COLONOSCOPY EXAM.

If you are healthy and have no symptoms, call 828-624-1358 to schedule a screening colonoscopy. A registered nurse will take your medical history over the phone and schedule your appointment. If you are having symptoms, you need a referral from your Primary Care Physician.

Our Office in Hickory, NC

Gastroenterology Associates, P.A.
415 North Center Street, Suite 300
Hickory, NC 28601

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Contact Us

Our office is open Monday through Friday from 8:30am to 5:00pm.

(828) 328-3300
(828) 328-9101

Our on-call physician can be reached through the Frye Regional Medical Center at (828) 315-5000 (established patients only)

For appointments and questions:
Call:   (828) 328-3300