Dr. Christopher W. Mangieri

The impact I have on my patients is what I enjoy most about being a weight loss surgeon. It is amazing that we can do an operation that not only helps a patient lose weight, but also fixes their diabetes, high blood pressure, and cholesterol, along with giving them a better quality of life. There are a lot of options these days for people who are considering weight loss surgery. It’s important for patients to take into account each institution and what resources they have available. Duke is fully equipped to take care of complex cases in a safe manner. We have a multi-institutional team that’s been around the Triangle the longest and has the most experience. Almost every patient comes back after surgery and we see some of their previous medical conditions go away. That’s a good definition of success. Dr. Portenier is rated as a Distinguished provider by MediFind in Sleeve Gastrectomy. His top areas of expertise are Obesity, Hernia, Short Bowel Syndrome, Gastric Bypass, and Sleeve Gastrectomy.

Adolfo Fernandez is a General Surgeon in Greensboro, North Carolina. Dr. Fernandez is rated as an Advanced provider by MediFind in Sleeve Gastrectomy. His top areas of expertise are Obesity, Hernia, Gallbladder Disease, Sleeve Gastrectomy, and Gastric Bypass. Dr. Fernandez is currently accepting new patients.

I care for patients seeking long-term, sustainable weight loss through advanced surgical options. As a bariatric and minimally invasive surgeon, I specialize in procedures such as sleeve gastrectomy, gastric bypass, and revision surgeries. I also address related conditions like hernias, reflux, and metabolic disease. I’m passionate about supporting patients not just during surgery, but throughout their journey—before, during, and long after the procedure. I chose this field because I’ve seen how life-changing these interventions can be, both physically and emotionally. I take time to understand each patient’s goals, challenges, and lifestyle, and I work with them to build a path forward that’s realistic and durable. Outside of work, I enjoy travel, music, and time with friends, which helps me stay grounded and energized for the work I do. Dr. Meireles is rated as an Advanced provider by MediFind in Sleeve Gastrectomy. His top areas of expertise are Achalasia, Obesity, Hernia, Sleeve Gastrectomy, and Gastrectomy.