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

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.



Jenna Beh, PA-C

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
*Individual results may vary.