Medifast

Tuan Nguyenduy, MD is a board-certified cardiovascular and thoracic surgeon in Sanford, Florida. He has more than 25 years of experience in treating patients with cardiac, thoracic and vascular problems.

Dr. Allison Ferrara is an internal medicine physician providing preventative care and chronic disease management in Florida. She is board certified in internal medicine and treats a wide range of conditions from heart conditions and high blood pressure to diabetes and asthma.