Peter S. Kay, MD
|Jubeen Moaven, MD||Amy Littlejohn, PA-C|
|Donald K. Yang, MD||Terrence Lee, MD||Mallory Fillmore, PA-C|
|Jonathan Gonenne, MD||Nathan Holman, MD||Karen Gibbs, FNP-C|
|Shane J. Mills, MD||Ryan De Lee, MD|
|Davis L. Sim, MD, PhD||Page Crenshaw, FNP, CGRN|
Our Mission Statement
Eugene Gastroenterology Consultants collectively commit to serve the entire community by providing care of the highest quality as an independent single-specialty group. Patient and referral physician satisfaction will be of paramount importance. We will maintain individual commitments, physician flexibility and responsiveness to the needs of patients, partners and employees.
The physicians and staff of Eugene Gastroenterology are committed to providing the Gold Standard of care and services to our patients and referring physicians. Established in 1977, we are the largest medical group specializing in gastroenterology south of Portland. All of our doctors are board certified in a full range of diagnostic and therapeutic gastrointestinal procedures. We look forward to serving you soon.
Peter S. Kay, MD
Dr. Peter Kay graduated from Columbia University with a B.A. in chemistry and then received his M.D. degree from the University of Chicago Pritzker School of Medicine in 1991. He completed his residency and fellowship training in internal medicine and gastroenterology at Stanford University.
Dr. Kay then joined Eugene Gastroenterology in 1997. His specialty interests include inflammatory bowel disease, irritable bowel syndrome, and gastrointestinal malignancies. His non-medical interests include fishing, hiking, collecting art/antiques, and traveling.
Donald K. Yang, MD
Donald K. Yang, M.D. received his B.A. in Biochemistry at the University of Pennsylvania magna cum laude. He remained at the University of Pennsylvania for medical school to receive his M.D. degree. Dr. Yang then attended Stanford University for Internship and Residency in Internal Medicine. He completed his fellowship in Gastroenterology at the University of California, San Francisco, (UCSF).
Dr. Yang is board certified in Internal Medicine and Gastroenterology. Beyond general Gastroenterology and hepatology, his special clinical interests include colorectal cancer prevention, inflammatory bowel disease, and endoscopic therapy of the biliary tract and pancreas. Outside of medicine, Donald and his wife, Elaine, are kept busy with a growing family. His non- medical interests include snowboarding, golf, and other outdoor activities.
Jonathan Gonenne, MD
Jonathan Gonenne, M.D. graduated Phi Beta Kappa from the University of North Carolina, Chapel Hill, majoring in Biology and Political Science. He received his M.D. at McGill University in Montreal, Canada. Jonathan then moved to Nashville, Tennessee where he completed an internal medicine residency at Vanderbilt University Medical Center and then worked as a hospitalist for Baptist Hospital. He completed a Gastroenterology fellowship at Mayo Clinic of Rochester, Minnesota and advanced endoscopy training at Beth Israel Hospital/Harvard in Boston, Massachusetts.
Jonathan is board certified in Gastroenterology. Particular GI interests include gastrointestinal/pancreatic cancer and endoscopic ultrasound, hepatobiliary disease, and inflammatory bowel disease. Jonathan likes to spend as much time possible exploring Oregon with his wife and daughters. He also enjoys tennis and blues harmonica.
Shane J. Mills, MD
Dr. Shane Mills graduated with a B.S. in Biology from Davidson College in 1995 and received his M.D. from the University of South Alabama College of Medicine in 2000. Shane did his Internal Medicine residency at Tripler Army Medical Center in Hawaii, where he received the William J. Uphouse Award for compassionate patient care. After serving as Chief of Medical Residents at Tripler, he completed his Gastroenterology fellowship at Brooke Army Medical Center in San Antonio, Texas with a focus on ERCP (therapeutic biliary endoscopy). He proudly served as Chief of Gastroenterology at William Beaumont Army Medical Center from 2008-2013. Dr. Mills was selected by his peers as the 2012 Eddy Palmer Endoscopy Award recipient, which recognizes excellence in endoscopy. His speciality interests include colorectal cancer screening and prevention, liver disease (chronic hepatitis C), inflammatory bowel disease, and endoscopic therapy of the biliary tract. Outside of work, he enjoys spending time with his wife and children. He is an avid football fan and also enjoys tennis, photography, and sketching.
Davis L. Sim, MD, PhD
Dr. Davis Sim graduated with a B.S. in physiological sciences from University of California Los Angeles in 2000 and received his medical degree and PhD in immunology from University of Virginia in 2009. He completed his internal medicine residency at Johns Hopkins Hospital in Baltimore in 2012 and subsequently completed his sub-specialty training in gastroenterology at Stanford Hospital in 2015. His particular interests include inflammatory bowel disease and gastrointestinal malignancies. His outside interests include spending time with his wife and 2 children, swimming, running, and cooking.
Jubeen Moaven, MD
Dr. Moaven graduated from Johns Hopkins University in Baltimore with a B.A. in neuroscience and received his M.D. degree from Jefferson Medical College in Philadelphia. From there he went on to the University of Virginia in Charlottesville, where he completed his residency in internal medicine and subsequently his fellowship in gastroenterology and hepatology.
Dr. Moaven is board certified in internal medicine and gastroenterology. His clinical interests include general gastroenterology and liver diseases, inflammatory bowel disease, esophageal disorders and colorectal cancer prevention. Outside of medicine his interests include international travel, cooking, hiking and scuba diving.
Terrence Lee, MD
Dr. Lee graduated from the University of Washington in Seattle with a B.S. in Neurobiology and a B.A. in English Literature, with Honors, and he graduated from Oregon Health and Sciences University in Portland with his M.D. degree. He continued his training in Internal Medicine at the University of Michigan in Ann Arbor and his subspecialty training in Gastroenterology and Hepatology at the University of Southern California in Los Angeles. He enjoys caring for patients with all types of general gastroenterology and hepatology problems, with specific clinical interests in therapeutic endoscopy, hepatology and chronic hepatitis, and inflammatory bowel diseases. Outside of medicine, his interests include exercise and fitness, movies, and the Seattle Seahawks.
Nathan Holman, MD
Dr. Holman graduated from the University of Utah with a B.A. in Biology in 2008 and received his M.D. from The Ohio State University College of Medicine in 2013. He then continued his training at the Medical University of South Carolina, first completing his residency in Internal Medicine and subsequently his fellowship in Gastroenterology and Hepatology. His clinical interests include general gastroenterology and hepatology, inflammatory bowel disease, colorectal cancer prevention, and nutrition. Outside of work he enjoys traveling, running, watching movies, and cooking.
Ryan De Lee, MD
Dr. De Lee completed his undergraduate degree at Stanford University before completing his medical degree at Loyola University in Chicago. He attended Dartmouth-Hitchcock Medical Center in New Hampshire, where he completed his internal residency and served as chief resident. Dr. De Lee continued at Dartmouth-Hitchcock completing his gastroenterology and hepatology fellowship prior to heading to Madison, Wisconsin to complete an additional therapeutic endoscopy fellowship focusing on pancreas, liver and cancer treatments. Dr. De Lee served as an Assistant Professor of Medicine teaching medical students as well as physician assistant students. While working in Springfield-Eugene, he established an advanced therapeutic endoscopic program at McKenzie-Willamette hospital. Dr. De Lee participates in the community tumor board conference and his clinical interests include general gastroenterology, GI cancer, endoscopic ultrasound, and ERCP. Outside of work, he enjoys spending time with his wife and three daughters, college sports, rugby, snowboarding, and watching his daughters pursue their various athletic endeavors.
Page M. Crenshaw, FNP, CGRN
Page Crenshaw, FNP was born in Memphis Tennessee and enjoyed living around the United States as the daughter of a Navy veteran. She earned a Bachelors of Science in Nursing from Oregon Health & Sciences University and completed her Master’s of Science in Nursing at University of Alabama in Birmingham with a specialty in Family Practice. She is board certified with American Nurses Credentialing Center, and is a certified gastroenterology nurse. Page has enjoyed nursing for over 20 years with more than 10 of those years in the field of gastroenterology. Her personal interests include golfing, camping and traveling.
Amy Littlejohn, PA-C
Amy Littlejohn, PA-C has been working in GI within our community for the last 11 years. Amy graduated with a BA in Biology from WIlliam Woods University in Missouri and received her Masters of Physician Assistant Studies degree from Oregon Health & Sciences University in 2004. Her specialty interests include capsule endoscopy and motility disorders. Her personal interests include collecting medical antiquities, sewing and 1960's vintage decor. She obtained the title of Master Food Preserver through the OSU Extension Office.
Mallory Fillmore, PA-C
Mallory Fillmore, PA-C graduated with a BA in Psychology from Luther College in Decorah, IA and received her Masters of Physician Assistant Studies from Midwestern University in Downers Grove, Il. Prior to transitioning to gastroenterology, Mallory worked for 4 years in Internal Medicine. Her personal interests include cooking, hiking and studying functional movement/alignment.
Karen Gibbs, FNP-C
Karen Gibbs FNP-C, obtained her Bachelors of Science in Nursing from Northern Arizona University. After spending many years working in critical care as an RN, she when on to obtain her Masters of Science in Nursing with a focus in Family Nurse Practitioner from the University of Phoenix, in Tempe, Arizona. She is board certified with the American Association of Nurse Practitioners. She enjoys caring for patients with all types of general gastroenterology and hepatology problems. Outside of medicine Karen enjoys riding, training, and raising quarter horses, spending time with her family, hiking, reading, and baking.