Robin Pinzon, MD

Dr. Dionigi is a double board certified colon and rectal surgeon with a specific interest and expertise in colon and rectal cancer, polyposis syndromes, re-operative colorectal surgery, as well as robotic and minimally invasive procedures. Dr. Dionigi obtained her medical degree with highest honors from the University of Pavia, Italy. After a surgical internship at NewYork-Presbyterian/Weill Cornell Medical Center in New York, she completed her general surgery residency at the Brigham and Women’s Hospital Harvard Medical School in Boston. During this time, she also did a two-year translational research fellowship related to mesenchymal stem cells at Boston Children Hospital. She then completed a colon and rectal surgery fellowship at the Salvati Fellowship Program at Rutgers Robert Wood Johnson in New Jersey, followed by two years of advanced training in complex reoperative colorectal surgery at the Cleveland Clinic Foundation in Ohio. Dr. Dionigi then joined the Division of Colorectal Surgery at NewYork-Presbyterian/Columbia University Irving Medical Center as Assistant Professor of Surgery. Since her arrival at NYP/Columbia, she has created the Women in Surgery Association (WINGS) first of its kind at Columbia with the goal of promoting women in leadership, she has served as Associate Program Director of the General Surgery Residency Program, and she is the founder and co-Chair of the collaborative translational project on Early Onset Colon and Rectal Cancer within the Columbia Research Cancer Center. Her dedication to the education of surgery residents was recognized with the 2023 Teacher Award. She is the author of several publications, received national and international awards for her research, and has been an invited speaker to national and international meetings.

Family medicine provides health care for people of all ages, from babies to older adults. Maria Lourdes Flores, MD is a board-certified physician, specializing in Family medicine. With an office conveniently located in Bronx, NY, Dr. Flores focuses on preventive care, diagnosis, and treatment of a variety of medical conditions to help you and your family stay healthy throughout life. Our doctors offer services like regular check-ups, vaccines, pediatric care, and more. Our team provides personalized care to help improve your family's health. Optum accepts most major health plans.

Dr. Alison Gruber, MD is an assistant professor of Obstetrics and Gynecology. She earned her undergraduate degree in Psychology from the University of Maryland. She obtained her medical degree at Drexel University College of Medicine, where she was inducted into the Alpha Omega Alpha Honor Society and the Gold Humanism Honor Society. She completed her OB/GYN residency at Thomas Jefferson University Hospital in Philadelphia, PA, where she graduated with the John B. Franklin Humanism Award, awarded to the chief resident who is known to go above and beyond for her patients and advocates for care that is in their best interest. Dr. Gruber is passionate about and knowledgeable in general gynecology, prenatal care, postpartum care, breastfeeding support and education, preventative care, infertility, and pediatric and adolescent gynecology. She is dedicated to and interested in teaching and is committed to educating medical students and residents. During her free time, she enjoys running, cooking, gardening, and spending time with her daughter and husband.