David R. DeHaas, Jr., MD, FACS

Dr. DeHaas has special interest and expertise in colorectal, esophageal, vascular and oncologic surgery. In addition to his surgical practice, he serves as the medical director of surgery and clinical course director for the medical student education program at PeaceHealth Sacred Heart Medical Center.


Dr. DeHaas earned a bachelor’s in chemistry and economics at Duke University in Durham, North Carolina. He attended medical school at Hahnemann University College of Medicine in Philadelphia, Pennsylvania. At the University of Wisconsin, Madison, he completed his general surgery residency, then received special training in colorectal, general and vascular surgery at Gloucestershire Royal Hospital in Gloucester, England.


Dr. DeHaas is certified by The American Board of Surgery.

Clinical Interests

Arteriovenous fistula (AV fistula)
Carotid endarterectomy for TIA and stroke
Fundoplication surgery for gastroesophageal reflux disease (GERD)
Gallbladder surgery
Laparoscopic colorectal surgery
Laparoscopic inguinal hernia repair
Laparoscopic pancreatic procedures
Lower extremity bypass
Major abdominal cancer surgery
Pancreatic surgery
Umbilical hernia repair
Ventral hernia repair

Boards & Committees

For many years, Dr. DeHaas has served on the PeaceHealth Community Board and is currently vice chair. He also holds the position of chairman of the Quality Committee Board and is the NSQIP surgeon champion and leader of the System Surgical Collaborative.

In the community, he serves on the ShelterChair Board and is a member of the Credentials Committee for PacificSource Health Plans.


Oregon Medical Association
Lane County Medical Society
Pacific Coast Surgical Association
North Pacific Surgical Association
American College of Surgeons Fellow


A long-time leader in Lane County’s medical community, Dr. DeHaas developed the nationally recognized Enhanced Recovery After Surgery Clinical Pathway for patients undergoing colorectal surgery that has dramatically decreased length of stay and surgical site infections in patients.

For 17 years, he served as medical director of trauma at Sacred Heart Medical Center, in addition to serving as surgery division chief, chief of general surgery, chief of staff and vice chief of staff.

Dr. DeHaas was the first recipient of the Endowed Chair for Surgery at Sacred Heart Medical Center. He also served as executive medical director of the Surgical Institute.

In addition, he is proud to have played a role in planning and designing the operating rooms and surgical services at Sacred Heart Medical Center at RiverBend.

He was recently published in the American College of Surgery Journal.

Personal Interests

Dr. DeHaas grew up in Pennsylvania then moved to Eugene, with his wife and three children in 1995, after practicing general, colorectal and general surgery in Virginia Beach, Virginia. His hobbies include bicycling, golfing, hiking, traveling and oil painting.