MediFind found 4 doctor with experience in Colonoscopy near Lewistown, PA. Of these, 4 are Experienced.
Geisinger Lewistown - Gastroenterology
Dr. Abdulsamad is a board-certified and fellowship-trained gastroenterologist. His clinical interests include general gastroenterology, liver disease, and endoscopic retrograde cholangiopancreatography (ERCP). Dr. Abdulsamad earned his medical degree from Jordan University of Science and Technology. He completed his residency and fellowship at Bronx-Lebanon Hospital Center. Dr. Abdulsamad is certified by the American Board of Internal Medicine in gastroenterology. He speaks English, Arabic and German. Dr. Abdulsamad is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Familial Pancreatic Cancer, Pancreatic Cancer, Choledocholithiasis, Endoscopy, and Colonoscopy.
Geisinger Lewistown - Gastroenterology
Dr. Duncan is a board-certified and fellowship-trained gastroenterologist. His clinical interests include endoscopic ultrasound and endoscopic retrograde cholangiopancreatography (ERCP). Dr. Duncan obtained his medical degree from the Western University of Health Sciences College of Osteopathic Medicine of the Pacific. He completed his residency at Madigan Army Medical Center, a fellowship in gastroenterology at Walter Reed Army Medical Center and another fellowship in hepatology and endoscopic ultrasound at the University of Maryland Medical Center. Dr. Duncan is certified by the American Board of Internal Medicine in gastroenterology. Dr. Duncan is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Choledocholithiasis, Bile Duct Obstruction, Gallstones, Endoscopy, and Gastrectomy.
Geisinger Lewistown - Gastroenterology
Dr. Craft is a board-certified and fellowship-trained gastroenterologist. His clinical interests include general gastroenterology and endoscopic ultrasound. Dr. Craft earned his medical degree from West Virginia University. He completed his intership, residency, was selected as chief resident in internal medicine, followed by a fellowship in gastroenterology and hepatology at the Medical University of South Carolina. Dr. Craft is certified by the American Board of Internal Medicine in both internal medicine and gastroenterology. Dr. Craft is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Familial Adenomatous Polyposis, Esophagitis, Turcot Syndrome, Endoscopy, and Gastrectomy.
Geisinger Clinic
Srinivasa Narayanaswamy is a Hospital Medicine provider in Lewistown, Pennsylvania. Dr. Narayanaswamy is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Intestinal Cancer, Endoscopy, and Colonoscopy.
Last Updated: 02/22/2026


