Business Details
49 Years
experience
Emergency
services
Expert Gastroenterology Care in Springfield, OR
Founded in 1977, we are the largest independent gastroenterology group south of Portland, committed to delivering exceptional digestive health care. Our board-certified physicians specialize in advanced diagnostic and therapeutic procedures, performing services at Oregon Endoscopy Center and Sacred Heart Medical Center. We prioritize patient safety through rigorous quality metrics including adenoma detection rates exceeding national standards, 95%+ cecal intubation rates, and meticulous withdrawal times during colonoscopies.Our team includes physicians, physician assistants, and nurse practitioners trained specifically in gastrointestinal care. With over four decades of experience, we maintain affiliations with the Oregon Cancer Alliance to provide coordinated cancer care. Our facility features state-of-the-art endoscopic equipment and adheres to strict safety protocols with complication rates significantly below national averages. We serve the Eugene-Springfield community through convenient office hours and 24/7 emergency availability.
Services
Colonoscopy
Upper Endoscopy
ERCP
Endoscopic Ultrasound
Capsule Endoscopy
Esophageal Manometry
Flexible Sigmoidoscopy
Details
- Year established: 1977
Highlights and features
- Board-certified gastroenterologists with 40+ years of local experience
- Adenoma detection rates exceeding national standards
- 24/7 emergency services for urgent gastrointestinal issues
- State-of-the-art endoscopic facilities with complication rates below 0.05%
- Affiliated with Oregon Cancer Alliance for coordinated cancer care
Services
Colonoscopy
Our board-certified specialists perform comprehensive colonoscopies to detect and prevent colorectal cancer. With adenoma detection rates exceeding national standards, we ensure thorough examination using advanced imaging technology. Patients receive personalized preparation instructions and post-procedure care guidance.
Upper Endoscopy
Diagnostic and therapeutic upper endoscopies examine the esophagus, stomach, and duodenum. Our physicians use high-resolution endoscopes to identify abnormalities like Barrett's esophagus and perform biopsies when necessary, with average withdrawal times exceeding 9 minutes.
ERCP
Endoscopic retrograde cholangiopancreatography diagnoses and treats bile duct and pancreatic disorders. Our specialists manage gallstones, strictures, and tumors using advanced interventional techniques in a dedicated hospital procedure area.
Capsule Endoscopy
Non-invasive small bowel evaluation using ingestible camera technology. This procedure helps diagnose obscure gastrointestinal bleeding and inflammatory bowel disease with minimal patient discomfort and no sedation required.
Endoscopic Ultrasound
High-resolution ultrasound imaging combined with endoscopy evaluates digestive tract abnormalities. Our physicians use EUS for precise staging of GI cancers and assessment of pancreatic diseases with 24-hour pH monitoring capabilities.
People
Davis L. Sim, MD, PhD
Gastroenterologist
Specializes in advanced endoscopic procedures with dual expertise in clinical medicine and biomedical research. Provides evidence-based care informed by ongoing scientific investigation.
Donald K. Yang, MD
Gastroenterologist
Focuses on digestive diseases with particular interest in colorectal cancer prevention. Maintains high adenoma detection rates exceeding national quality benchmarks.
Erica Donnan, MD
Gastroenterologist
Specializes in women's gastrointestinal health and preventive care. Implements individualized screening protocols for at-risk patient populations.
Angela Wilson
Chief Executive Officer
Oversees clinical operations and quality assurance programs. Ensures compliance with national endoscopic standards while maintaining patient-centered care delivery.
Karen Gibbs, FNP-C
Nurse Practitioner
Provides comprehensive GI care with specialized training in digestive disorder management. Focuses on patient education and preventive health strategies.
Questions
What gastrointestinal conditions do you treat?
We diagnose and treat all digestive system disorders including acid reflux, inflammatory bowel disease, colorectal cancer, gallbladder disease, and liver conditions.
How should I prepare for a colonoscopy?
Detailed preparation instructions will be provided, typically involving dietary restrictions and bowel cleansing solutions to ensure optimal visualization during the procedure.
Are your physicians board-certified?
All our gastroenterologists maintain board certification in both internal medicine and gastroenterology with ongoing continuing medical education.
Do you offer emergency GI services?
Yes, we provide 24/7 emergency coverage for urgent gastrointestinal issues with on-call physicians available at all times.
Where are procedures performed?
Most procedures occur at our Oregon Endoscopy Center or Sacred Heart Medical Center RiverBend Hospital with state-of-the-art endoscopic equipment.
What quality metrics do you track?
We monitor adenoma detection rates, cecal intubation rates, withdrawal times, and complication rates to maintain standards exceeding national benchmarks.
Reviews (7)
Beverly Boutwell
Jun 08, 2022
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I had an enjoyable and informative visit with Amy Littlejohn PA-C. She gave me loads of info about my condition and took time to explain in detail about what she believes will help me. All in all I felt comfortable with her and issues covered by her I feel I'll benefit from them. Thank. You, Beverly Boutwell
Kevin Wescott
Jun 08, 2022
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Actually it was Brenda who saw Sokol PA at Eugene Gastroenterologist's on a video call and was very happy with the information and help she received
Cheryl Mitchell
Jun 03, 2022
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Dr. Kay is a very compassionate and friendly person. I have trusted him threw to many procedures. My health is not really good but he takes time to listen.
Larry & Sylvia Mangan
May 16, 2022
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We visited with Karen Gibbs today, a NP. She was very thorough, and educated me well, and explained recent tests that I had received in Bay Area Hospital. She also outlined a good plan for treatment, and certainly was professional and reassuring in her visit.
D. Winitzky
Apr 20, 2022
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Rebecca Howard PA did my telehealth call today and she is simply outstanding! She had reviewed my medical history, asked great question and thoroughly answer all my question. I would sincerely recommend this practice.
Kathleen Burke
Apr 10, 2022
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I had 2 telemedicine visits with Dr Peter Kay. He had my history and details so that we were able to go forward to the next step. He ordered a CT scan, which ruled out anything worrisome. So, on my next visit, we talked about options for what to eat or to take a drug he recommended. He said it was "up to me" which I appreciated.
Liuda Vavelschi
Mar 13, 2022
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Doctor Yang is a highly competent professional in his gastroenterology practice and internal medicine. I am so grateful for his highly detail-oriented medical expertise, help, and care through all those years. With best regards your thankful patient.
