Diego Muilenburg, MD

Dr. Muilenburg is a board-certified surgical oncologist who understands the unique challenges that cancer patients face. He strives for the best approach to each patient’s unique medical needs, applying the latest technology and current guidelines for cancer care. He has robust experience with robotic surgery and uses minimally invasive surgical techniques whenever possible.

Dr. Muilenburg specializes in gastrointestinal cancers, including pancreatic and hepatobiliary, as well as rare tumors like desmoid, GIST, and neuroendocrine cancers. He also treats breast cancer, soft tissue sarcomas, and skin cancers. He performs hernia surgery through robotic and open complex techniques, including diaphragmatic (anti-reflux) and parastomal hernia repair.


Dr. Muilenburg attended Colby College in Waterville, Maine and received his MD from Georgetown University School of Medicine.
He completed his general surgery residency at the University of California, Davis in Sacramento.  During residency, Dr. Muilenburg spent two years in a laboratory research fellowship studying chemotherapy resistance in pancreatic cancer. He completed his training with a two-year clinical fellowship in Complex General Surgical Oncology at the H. Lee Moffitt Cancer Center in Tampa, FL.  He is certified by the American Board of Surgery in both General Surgery and Complex General Surgical Oncology. Prior to moving to Eugene, Dr. Muilenburg worked as a surgical oncologist in Portland, Oregon for 3 years and spent 5 years as director of surgical oncology at the Cancer Treatment Centers of America Phoenix location.

Personal Interests

Originally born and raised in the U.S. Virgin Islands, Dr. Muilenburg is also an experienced sailor. More recently he’s been drawn to the Pacific Northwest by the beautiful Oregon landscape and enjoys a wide variety of outdoor activities alongside his wife and two children.