Daniel J. Gassert, M.D. is certified by the American Board of Internal Medicine and Board Certified in Gastroenterology. After graduating with honors from Duke University, Dr. Gassert received his medical degree from New York University School of Medicine in 2000. While at NYU, he was elected to Alpha Omega Alpha, the national medical school honor society. Dr. Gassert trained at New York-Presbyterian Hospital at Cornell University and Memorial Sloan-Kettering Cancer Center for his Internal Medicine residency. He completed a three-year Fellowship in Gastroenterology at Montefiore Medical Center/Albert Einstein College of Medicine. Dr. Gassert joined G.I. Associates in 2006.