Dr. Nooshin HosseiniM.D., practices at Vanguard Gastroenterology located in New York City, NY.

Dr. Nooshin Hosseini is dual board-certified in internal medicine and gastroenterology. She is an assistant professor at the Zucker School of Medicine at Hofstra/Northwell, Division of Gastroenterology. She was previously a clinical assistant professor at the NYU Division of Gastroenterology. She completed her undergraduate studies at Wellesley College and her medical degree from Penn State College of Medicine. She then moved on to complete her training in both internal medicine and gastroenterology at the University of Massachusetts Medical School. Following the completion of her fellowship, Dr. Hosseini worked in the greater Manhattan area for several years as a general gastroenterologist.

Dr. Hosseini has a variety of clinical research interests, including colon cancer screening disparities, microscopic colitis, and alcoholic liver disease, and has published over 10 peer-reviewed papers, clinical reviews, and abstracts.

Dr. Hosseini practices general gastroenterology with clinical areas of focus including irritable bowel syndrome and functional GI disorders, H. pylori infection, eosinophilic esophagitis, Barrett's esophagus, GERD, celiac disease, constipation, and colon cancer screening, among others. She is a member of the American College of Gastroenterology, the American Gastroenterological Association, and the American Society for Gastrointestinal Endoscopy. She has served as a guest medical expert for major media outlets, including Allure and The Today Show. She was named a Super Doctors Rising Stars in 2024 and 2025.