Mercedes Martinez, MD

Pedro R. Sandoval, MD is a highly skilled surgeon specializing in kidney transplant surgery, general surgery, and pediatric surgery. With a focus on providing exceptional care, Dr. Sandoval is affiliated with prestigious institutions such as Columbia University and NewYork-Presbyterian Hospital. With multiple locations in New York City, Dr. Sandoval offers comprehensive services to both new and existing patients, including virtual visits and access to the Columbia Connect app for convenient health management. Accepting a wide range of insurance plans, Dr. Sandoval is dedicated to delivering top-quality care to patients of all ages.Generated from the website

From an early age I knew that I wanted a profession that involved caring for children. I am very fortunate to have found that as a pediatric gastroenterologist. Children never cease to amaze me in their creativity, energy, and resiliency. I especially love developing long term relationships with these children and their families. Patients come to me for a variety of gastrointestinal and nutritional issues. These include celiac disease, reflux, abdominal pain, inflammatory bowel disease, constipation, and diarrhea. When needed, I also perform endoscopies and colonoscopies to help diagnose and manage these conditions. I am fortunate to be a part of the remarkable team at the Celiac Disease Center at Columbia University. The center provides excellent care to children and adults with celiac disease, an autoimmune disease that results in damage to the small intestine when gluten is ingested. The only treatment for celiac disease is a lifelong gluten free diet. With a team composed of physicians, registered dieticians, pathologists, and researchers, we are dedicated to delivering comprehensive and compassionate care to patients and their families. Celiac disease is a condition near and dear to me, having been diagnosed myself as an adult. I feel very strongly that it’s important while treating celiac disease to ensure that my patients are not only healthy but happy. I also spend time on celiac disease-based research and educational programming. I have a particular interest in the impact of celiac disease on our patients and their families. I am also involved in the training of future pediatric gastroenterologists at Columbia University.

Dr. Llore is an Assistant Professor of Surgery at Columbia University and an Attending Transplant Surgeon at New York Presbyterian Hospital. Dr. Llore received her undergraduate degree from Fordham University and her medical degree from New York University School of Medicine. She completed general surgery residency at Georgetown University Hospital and abdominal transplant/hepatobiliary fellowship training at New York Presbyterian Columbia and Weill Cornell. She received additional training on the immune response after a liver transplant and xenotransplantation with Dr. Megan Sykes at Columbia Center for Translational Immunology (CCTI). She is board-certified in general surgery and received specialty training in abdominal transplant and hepatobiliary surgery. Her practice interests focus on the surgical management of children and adults with liver and bile duct disease, including benign and malignant liver tumors. She practices minimally invasive surgical techniques in liver surgery to shorten recovery times and reduce post operative discomfort. Dr. Llore is interested in surgical education and is the Associate Program Director for the ASTS certified surgical fellowship program.