Throughout our years of service to the Denver, CO community, we've provided a wide array of GI services. The caring and compassionate environment that we've cultivated in our office is one of the many reasons why our patients have trust and confidence in the care we provide. To learn more about our quality of care, browse through our reviews below. You will see for yourself the care you can expect from our GI specialists at Colorado Gastroenterology.
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- Colon Cancer (1)
- Colorectal Polyps (1)
- Crohn's Disease (2)
- Hemorrhoids (2)
- Hepatitis (2)
- Inflammatory Bowel Disease (1)
- Pancreatitis (1)
- Biliary Obstruction (1)
- Dysphagia (1)
- Peptic Ulcers (3)
- Esophagus Problems (2)
- Gallstones (2)
- Liver Masses or Cysts (2)
- Barrett's Esophagus (3)
- Celiac Disease (1)
- Diverticulitis (1)
- Diverticulosis (4)
- Gallbladder Disease (1)
- Hiatal Hernia (1)
- Ileitis (2)
- Impacted Bowel (5)
- Jaundice (1)
- Esophagitis (2)
- Eosinophilic Esophagitis (1)
- Esophageal Motility Disorder (1)
- Primary Biliary Cholangitis (3)
- Primary Sclerosing Cholangitis (1)
- Colitis (2)
- Bloating (2)
- Blood in the Stool (2)
- Bowel Incontinence (1)
- Constipation (3)
- Diarrhea (1)
- Difficulty Swallowing (3)
- Unexplained Weight Gain/Loss (1)
- Vomiting (1)
- Heartburn (3)
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"Dr Sieja found colorectal cancer on my very first colonoscopy. His care and professionalism supported me through the experience and to a manageable lifestyle to this day."
"Was seen quickly and on time. Dr listened and made good suggestions and had a wonderful bed side manner Would highly recommend"
"It was a great & wonderful experience, my appointment with doctor Kevin Sieja, M,D was totally awesome, I'm looking forward to my next appointment at ease. and the staff just wonderful."
"Dr. Sieja and his team are thorough and do a great job at explaining any diagnosis you may have. I felt confident being in his care and he has a great bedside manner."
"After meeting with Dr. Sieja I left feeling like all my concerns and questions were heard and addressed. He is a great listener and really helped me understand the next steps for getting care. These days, it’s hard to find a Dr. with such high standards. The time he took with me was noticed and appreciated."
"Dr. Sieja listens to my concerns and explains my health situation in a way I can easily understand. He also orders tests to know if anything is developing. He is friendly and relaxed"
"I’ve been seeing Dr. Sieja for a decade now and he and his staff are always professional and attentive to my needs. I highly recommend him and Colorado GI!"
"Dr. Kevin Rufner is very thorough, knowledgeable and excellent. I definitely recommend him. Thanks, Virginia"
"Very good, positive experience."
"Very good bed side manner, activity listened to me and was engaged in the conversation. He was punctual and has a great personality"
"My visit Dr. Sieja went well. He listened to my symptoms and history to provide me options. I left feeling confident about the next steps in my care plan."
"I always appreciate Dr. Sieja’s care and professionalism. He is incredibly helpful while providing a thoughtful analysis and treatment plan. I recommend him highly."
"I've relied on Dr. Sieja over 17 years for his medical care, comprehensive knowledge, kindness, responsiveness, gentleness, communication, discussing treatment options, and evaluations in treating my inflammatory bowl disease. His office has been quick to respond to my questions and flexible in scheduling appointments."
"Dr. Sieja listened to what was ailing me during my visit and straightforward on what needed to be done next. I was happy with my visit."
"Dr. Sieja is extremely knowledgeable, professional and friendly. I know I am in good hands and getting great advice. Thank you!!!"
"Dr. Sieja listed to what I had to say. Scheduled appointments for me the very next day, in order to get to the root of my problem. I am thankful for having him as my doctor."
"I have been a patient of Dr. Kevin Rufner with Colorado Gastroenterology for many years, and it has always been a positive experience. Dr. Rufner is a kind and caring human being who really listens to his patients. He never makes me feel rushed or hurried, gives me up-to-date information about my health complaints, and always comes up with a complete plan of care for every issue. Additionally, his staff are friendly and supportive. I cannot recommend Dr. Rufner enough. He is an excellent doctor with an excellent staff."
"I have been a patient of Dr. Sieja for many years. He has helped me through a lot in the past few years. He is caring and very easy to talk to. HE LISTENS!!!"
"Comprehensive, compassionate, educational with a solid plan of action put in place to address health issues. I highly recommend Dr. Kevin Rufner."
"I've seen Dr. Kevin Rufner for a few visits over the last year while we get my treatment plan changed up, and I'm extremely satisfied with his care. I've had IBD for 40 years, and lived in different places, so I've seen many GI Docs over that time. You won't go wrong with him as your GI Doc."
"I saw Dr. Kevin Rufner for the first time today, for long standing Crohn's Disease. Based on only one very extensive meeting, I was extremely impressed with Dr. Rufner and will absolutely continue seeing him. I feel very fortunate to have connected with him. I've had Crohn's for over 40 years, so I've seen my share of GI doctors."
"Had a very nice Consultation with Dr. Sieja, looking forward to my endoscopy to get some solid answers."
"Dr Sieja is caring, thorough, and professional. He listened carefully, asked questions, and clarified expectations about my care."
"Dr. Sieja was very detailed and thorough in discussing the issues that I had recently experienced. He was able to clearly articulate certain things that I needed to change that included both lifestyle and dietary changes. I would strongly recommend Dr. Sieja for anyone that needs to consult with a Gastroenterologist."
"Kevin Ruffner is an excellent Physician and I'm blessed to have Him in My corner."
"I've been seeing gastroenterologists in various cities for the past 20 years. Dr Kevin Rufner is BY FAR the most informative, patient, kind, and knowledgable doctor I have worked with. He is a member of various advisory boards and study groups around the state and country and so is informed about the latest clinical studies, and he is always willing to take as much time as I need to explain my current health status, his recommendations and reasoning behind them, and address any concerns or questions I have. I have never felt rushed or confused, and even when the news isn't great I leave his office feeling empowered about next steps. I cannot stress enough how much I have preferred working with him over any other GI I've seen. I used to leave my doc's office in tears so frequently because of feeling confused and scared about what I was going through, that I started taking a full day off work whenever I had an appointment, regardless of appointment time. This pattern ended when I started seeing Dr Rufner. I have also never posted a review for a doctor before because I've never had an experience worth sharing until now. I've recommended Dr Rufner to a number of friends and colleagues. I'd also like to point out that every staff member I've encountered at the Colorado GI Ogden Street location has been patient, friendly, helpful, and easy to work with. They've also contributed to my general feelings of ease whenever I need to visit the office."
"i have seen Dr. Sieja twice.He is personable and very detailed with his approach to my issues."
"Office is very efficient and Dr. Sieja really listens to what you have to say."
"Kevin Rufner is the 3rd GI doctor I have gone to and the only one who has sat down and actually listened to the issues I had and helped me understand them. Definitely recommended."