Kevin M. Rufner, MD
Practice: Peak Gastroenterology Associates
Specialty: Gastroenterology
Office locations: Lone Tree, Castle Rock
Dr. Kevin M. Rufner, M.D., earned his medical degree and Master of Public Health from Tufts University School of Medicine and completed his internal medicine residency and gastroenterology fellowship at the University of Colorado Health Sciences Center. Board-certified in gastroenterology, he specializes in advanced endoscopic procedures (colonoscopy, EGD, ERCP with cholangioscopy, capsule endoscopy, and stricture management), esophageal function testing, and inflammatory bowel disease.
Dr. Kevin M. Rufner, M.D., earned his medical degree and Master of Public Health from Tufts University School of Medicine and completed his internal medicine residency and gastroenterology fellowship at the University of Colorado Health Sciences Center. Board-certified in gastroenterology, he specializes in advanced endoscopic procedures (colonoscopy, EGD, ERCP with cholangioscopy, capsule endoscopy, and stricture management), esophageal function testing, and inflammatory bowel disease.
Kevin M. Rufner, M.D., is a board-certified gastroenterologist providing comprehensive digestive care in Lone Tree and Castle Rock. He specializes in advanced endoscopic procedures, including colonoscopy, upper endoscopy (EGD), ERCP with cholangioscopy, capsule endoscopy, esophageal function testing, and complex stricture management.
Dr. Rufner completed his Gastroenterology and Hepatology fellowship at the University of Colorado Health Sciences Center, where he also trained in Internal Medicine.
He earned his Doctor of Medicine and Master of Public Health degrees from Tufts University School of Medicine.
He has a particular clinical interest in inflammatory bowel disease and is committed to helping patients navigate complex diagnoses with clarity and confidence.
Recognized for both technical expertise and compassionate care, Dr. Rufner is dedicated to delivering personalized treatment plans that prioritize long-term digestive health and patient understanding.

Dr. Ruffner continuously provides expert advice and care. Highly recommend him for his bedside manner and expertise.
Dr. Rufner and his staff are amazing. So kind. So friendly. It's refreshing to visit a doctors office where you feel seen. I would recommend them to anyone.
After a long journey trying to understand a complex medical condition, finding Dr. Rufner has been a positive experience. What I appreciate most is that he listens. He takes the time to understand medical history, considers the bigger picture, and doesn't dismiss symptoms because they don't fit neatly into a diagnosis. More importantly, he turns those conversations into a thoughtful, actionable diagnostic and treatment plan. For someone like me, who has spent months searching for answers, that means a great deal. I especially appreciate his willingness to explore different possibilities, explain his reasoning, and involve me in decisions about my care. He hasn't solved everything yet, but for the first time in a while, I feel heard, respected, and hopeful that we're moving in the right direction.