GRANITE STATE
GASTROENTEROLOGY
friendly service with an emphasis on patient
choice and communication.
Welcome!

At Granite State Gastroenterology, we are proud to offer friendly, courteous, and knowledgeable care close to home for patients with gastrointestinal tract, liver, and pancreatic disorders. We have a team of experts in general gastrointestinal disorders, inflammatory bowel disease, esophageal motility disorders, liver disease, and treating Hepatitis C. Our team consists of four physicians Board Certified in Gastroenterology and three Advanced Practice Practitioners (APPs). Two of our APPs are Physician Assistants, and one is a Nurse Practitioner.
Latest Updates
Granite State Gastroenterology Articles

Colorectal Cancer Awareness: Why Screening Saves Lives
March is Colorectal Cancer Awareness Month, a time dedicated to raising awareness about one of the most preventable yet deadly cancers. Colorectal cancer is the second leading cause of cancer-related deaths in the U.S., but with early detection and proper screening, survival rates dramatically improve.

February is National Cancer Prevention Month: How Your Gastroenterologist Can Help Reduce Your Risk
Every February, National Cancer Prevention Month serves as a powerful reminder of the importance of early detection and proactive healthcare in the fight against cancer. Gastrointestinal cancers, including colorectal, esophageal, pancreatic, and liver cancer, can often be detected early or even prevented with proper screenings and lifestyle changes.

New Year, New Health Goals: Why Colonoscopies Save Lives
As we step into a new year, it’s the perfect time to prioritize your health and set goals that can have a lasting impact. One of the most important things you can do for your health is to stay on top of preventive screenings, including a colonoscopy.
Our Services
Granite State Gastroenterology will handle all your gastrointestinal needs, from gastroesophageal reflux treatments to colonoscopies.

Colonoscopy

Upper Endoscopy
Using an upper endoscopy, we can evaluate and diagnose many issues and get you on the path to treatment or management.

Capsule Endoscopy
A capsule endoscopy can evaluate and image your small bowel by recording video as it travels through your system.

Gastrostomy Tube
(P.E.G.) Placement
At Granite State Gastroenterology, we offer the service of placing a gastrostomy tube, also known as a PEG tube, which provides supplemental feeding, hydration, or medication.

Bravo PH Probe Study
To evaluate symptoms of acid reflux, we can complete a test that will give us data on your symptoms, helping us diagnose and treat you.

Expertise
We have expertise in liver disease, hepatitis C, inflammatory bowel disease, irritable bowel syndrome, disorders of the pancreas, and anal and rectal disease.
Patient Stories
Trip to Health Worth Taking
When you find a good doctor, it makes the trip from Maryland to New Hampshire worth taking. That is exactly what George Sneed does. Sneed has extremely debilitating ulcerative colitis when it is active. His ulcerative colitis sometimes caused Sneed to go to the bathroom 10 to 15 times in four hours, making work or anything physical extremely difficult. Fortunately for Sneed, those times are now few and far between. He attributes much of his remission to the great care he has received from Dr. McLean.

Trust Keeps Him Coming Back
William Shakespeare once said, “Men of few words are the best men.” Granite State Gastroenterology patient John Moody, 75, of Derry, would certainly agree when it comes to Dr. Knut Roalsvig. “He’s a man of few words, but every word is important and means something,” said Moody. “Dr. Roalsvig asks a lot of questions, listens, takes copious notes, and is very thoughtful. You can almost see his brain working. He doesn’t let anything get by.”
