Patient Reviews

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.

5.0 Review from K.G. Source: Google May 11 2023

"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."

5.0 Review from B.R. Source: Google Apr 25 2023

"Dr. Rufner helped confirm a diagnosis for me after experiencing mystery symptoms for over two years. I felt like my concerns were taken seriously at this clinic and I am very thankful and actively working on symptom management. As part of my diagnosis I had an endoscopy at their procedure center and it went very smoothly there as well."

5.0 Review from K.S. Source: Google Nov 25 2022

"I have been going to Dr Rufner since 2014 when my pancreas blew up. Dr Rufner has been my rock ever since and helped me walk through a very rough road of multiple ERCPs (over 12), stones and major surgery. I feel like I owe my health and life to him. He is extremely knowledgeable, kind, calming and you cannot do better than Dr Rufner!"

5.0 Review from L.A. Source: Google Sep 25 2022

"Dr. Rufner listens and hears what the patient has to say. Then doctor and patient can come up with a solution. I've been seeing Dr. Rufner for several years and wouldn't consider seeing anyone else. He helped me through my recovery after colon cancer. I highly recommended Dr. Rufner."

5.0 Review from K.B. Source: Google Jul 25 2022

"At my colonoscopy appointment today, I was greeted by a kind and caring staff. The Denver Endoscopy Center is Immaculate and well-appointed. I felt i was in the best care with Dr. Rufner and his team! Thank you!"

5.0 Review from P.M. Source: Google May 25 2021

"I had a colonoscopy with Dr Brenner she was so pleasant and made me feel comfortable. The staff and nurses that worked with her were absolutely amazing. So kind and caring. I would recommend them to anyone and I would definitely feel completely comfortable with Dr. Brenner handling any Gastrointestinal problems I had."

5.0 Review from M.E. Source: Google May 25 2021

"Had a very nice Consultation with Dr. Sieja, looking forward to my endoscopy to get some solid answers."

5.0 Review from K. Source: Google May 25 2018

"I have spent plenty of time in doctor's offices and hospitals and unfortunately am only 30. I have genetics that make me very prone to colon cancer, so I met with Dr. Frank and had a colonoscopy done as a result. They found a polyp, removed it and I have a plan moving forward. Overall, with Dr. Frank and everyone in the office, they were extremely pleasant all the way over to the Denver Endoscopy Center. I have had terrible experiences and this was the complete opposite. I had also called another local gastro group and received a different experience. Regarding the poor review below about insurance and costs. I can't remember her name, but a representative of the office reached out to me about my insurance, clearly explained costs, potential for payment options, etc. Since I am young, my insurance didn't off the bat consider this preventative. I had genetic testing done and she was able to detail what I needed to do with the insurance company to get it to be preventative. She even allowed me to merge a call with her and my insurance provider. Couldn't have been happier. Thank you."

5.0 Review from N.B. Source: Google May 25 2018

"In August I had a colonoscopy with Dr. Rufner at the Golden location, and a few weeks later, my husband had his done in Denver. Dr. Rufner is the best in every way you want a doctor to be. He explains EVERYTHING and spends as much time as you need. I guess that's called a good bedside manner. Additionally, the folks that work on his team are fantastic. The receptionist immediately greets you with a big smile and makes you feel welcome. Then, the nursing staff takes over and they couldn't be any nicer and did I mention how efficient, professional and kind they all were? Anyway, I can't say enough positive about these folks and want to thank everyone at Colorado Gastroenterology for making a difficult procedure almost enjoyable."