Services
Diagnosis and treatment of digestive conditions that cause heartburn, irritation, pain, or sores in the stomach or esophagus.
Difficulty Swallowing
Evaluation and treatment of problems that make swallowing food or liquids difficult or uncomfortable.
Celiac Disease
Diagnosis and management of an immune reaction to gluten that can damage the small intestine.
Inflammatory Bowel Disease (IBD)
Care for chronic inflammation of the digestive tract that can cause pain, diarrhea, and other symptoms.
Irritable Bowel Syndrome (IBS)
Management of a common digestive condition that can cause abdominal pain, bloating, constipation, or diarrhea.
Crohn’s Disease/Ulcerative Colitis
Diagnosis and ongoing care for chronic inflammatory conditions affecting the digestive tract and colon.
Upper GI Endoscopy
A procedure using a small flexible camera to examine the esophagus, stomach, and upper small intestine.
Diverticulitis/Abdominal Pain
Evaluation and treatment of abdominal pain, including inflammation or infection of small pouches in the colon.
Gastrointestinal Bleeding
Diagnosis and treatment to identify and address bleeding within the digestive tract.
Liver Disease
Evaluation and management of conditions that affect the health and function of the liver.
Colonoscopy
A procedure using a flexible camera to examine the colon and detect polyps, inflammation, and other abnormalities.
Colorectal Cancer Screening
Screening to identify precancerous polyps or colorectal cancer at an early, more treatable stage.
419 Central Ave.
Dunkirk, NY 14048
Phone: 716-672-2000
Fax: 716-363-2172
268 W. Main St.
Fredonia, NY 14063
Phone: 716-672-2000
Fax: 716-363-2172
Keith W. Kulju, MD
Dr. Keith W. Kulju, MD and board-certified gastroenterologist, joined LEMS in August 2026. Known, respected and trusted throughout Chautauqua County, Dr. Kulju brings decades of expertise in treating digestive and gastrointestinal disorders.
Dr. Kulju earned his medical degree from the State University of New York, Upstate Medical Center in Syracuse, NY. He completed a residency in internal medicine at the University of Rochester/The Genesee Hospital in Rochester, NY and was a fellow in gastroenterology at the University of Rochester. Additionally, Dr. Kulju holds board certification in internal medicine. Among his specialties are the diagnosis and treatment of: celiac disease, liver disease, inflammatory bowel disease (IBD), irritable bowel syndrome (IBS), Crohn’s Disease and difficulty swallowing. He treats gastrointestinal bleeding, diverticulitis and performs colonoscopies and screenings for colorectal cancer.
Dr. Kulju is committed to providing high-quality, patient-centered care to his long-time patients and for our extended community in his new Dunkirk/Fredonia offices and at Brooks Hospital.
