Our Team

The Bay Bariatrics Team

Located in beautiful Coos Bay, OR, the highly-skilled team at Bay Bariatrics is here to help you look and feel your best. 

Dr. Steven Tersigni

Steven Tersigni, MD, FACS, is an expert in the field of bariatric surgery. Board certified since 1996, he is also a fellow with the American College of Surgeons, an honor awarded only to proven and accomplished surgeons. In addition to his surgical expertise, Dr. Tersigni fosters a caring and compassionate environment for every patient.

 Dr. Tersigni earned his medical degree from the University of Utah in 1990 and completed his internship and residency at the University of Kansas.

A leader in the field of bariatric surgery, he is certified by the American Board of Surgery and has served as president of the Oregon Society of Metabolic and Bariatric Surgery. Dr. Tersigni has practiced bariatric surgery longer than anyone else in Oregon and serves as a mentor to other bariatric surgeons. 

 Dr. Tersigni is a member of multiple professional associations, including the American Medical Association, American College of Surgeons, Southwestern Surgical Congress, and the Oregon Chapter of the American College of Surgeons, and has been president of the American Society of Metabolic and Bariatric Surgery.

 Dr. Tersigni and his wife Lori live on Oregon’s south coast and enjoy spending time with their three children and grandchildren.

Dr. Derek Rogalsky

Dr. Derek Rogalsky is a general and bariatric surgeon at North Bend Medical Center in Bay Bariatrics.  He grew up in the Northwest, in Eastern Washington and attended college at Seattle University.  It was there that he met my wife Rebekah and started his journey into service and medicine.  

After receiving their undergraduate degrees Rebekah and he spent a year teaching and mentoring at a school in Haiti for the underserved.  Following this year of service Dr. Rogalsky enrolled at Georgetown University School of Medicine. It was at Georgetown that he learned the concept of Cura personalis, which is the motto of Georgetown medical school meaning ‘care of the whole person’ and is most embodied by caring for not only for a person’s medical needs but recognizing how social, emotional, and spiritual needs play a huge part in a person’s health.  He left Georgetown University with this philosophy of medicine deeply ingrained and pursued his surgical training back home in the Northwest at Oregon Health and Science University.  

His philosophy of surgically assisted weight loss is that the operation is only a piece of the greater puzzle.  Every patient needs to find their own motivating factors for weight loss and make substantial life changes in order for the surgery to be maximally effective.  Dr. Rogalsky believes it is his job to support people through these important life changes with a thoughtful, thorough, and diligent approach to the preoperative work-up, giving people a technically flawless operation when it is time, and following patients throughout their postoperative journey to ensure success. 

Jenna Beh, PA-C

Jenna Beh joined Bay Bariatrics in November 2018 as both physician assistant and bariatric treatment coordinator. Prior to becoming a Physician Assistant (PA), Jenna was a registered dietitian in her hometown of Pittsburgh, where some of the first laparoscopic weight loss procedures were performed.

 “Obesity is a deeply personal disease. I’m honored when patients choose to share their stories, struggles, and successes with me.”

When Jenna and her dog aren’t spending a rainy day binge-watching a new show on Netflix, you may bump into them walking on the beach, jogging around town, hiking through the woods, or practicing yoga.

*Dr. Tersigni did my operation, and I am so grateful that my postop has been almost completely uneventful and pain-free. I’ve lost more than 100 pounds from my high weight, and my diabetes, which I had for 10 years, appears to be cured. The good doctor and his staff have been so caring, and words cannot express my gratitude.

Jerry Christean

Florence, Oregon