About Us

The Samaritan Bariatric Surgery Program team

About Us

What makes the quality of the Samaritan Bariatric Surgery Program so good?

As part of Samaritan Health Services, the Samaritan Bariatric Surgery Program offers patients the very best in medical quality. Your surgery will take place at Good Samaritan Regional Medical Center in Corvallis. Don Yarbrough, MD, performs every weight loss surgery procedure at the Samaritan Bariatric Surgery Program. Procedures include laparoscopic Roux-en-Y gastric bypass, sleeve gastrectomy and gastric banding.


Bariatric Surgeon
Don Yarbrough, MD
Dr. Yarbrough is a board-certified general surgeon with special training and expertise in the full breadth of laparoscopic bariatric surgery...
Read his full bio

Outstanding support staff

From the friendly, knowledgeable person who answers the phone when you call to the expert dietitians who meet with you before and after your surgery, our support staff are passionate about what they do - helping you! They will be available to assist you long after you've recovered from your surgery.

Support Staff

Doug Huntley, PA-C
Doug is a certified physician assistant who earned a bachelor's degree from California State University, Long Beach and a physician assistant degree from Midwestern University in Downers Grove, Ill. He is a member of the American Academy of Physician Assistants and Oregon Society of Physician Assistants.

Greg Showell, RN
Greg assists patients through each step of the Samaritan Bariatric Program, from approval for surgery to after care and follow up work. He also teaches the monthly informational class for those interested in the program and coordinates the program support group.

Angela Johnson, LD, RD
Our registered dietitians have experience working with bariatric and diabetic patients. With the bariatric team, they coordinate the program support group, focus on dietary assessment and management, and assist patients with pre and post operative plans and advice.
Lisa Hublitz, LD, RD
Sharon Williams, CMA
Our office medical assistant, Sharon Young, is essential in keeping the bariatric office running smoothly. Her duties include preparing patients for examinations, taking medical histories and assisting the physician during exams. She is also available to explain medical procedures to patients, call in prescriptions to pharmacies and schedule appointments.