Jon J. Ernstoff

Dr. Kahn is a board-certified gastroenterologist who has been practicing in the Stamford Health system for more than 30 years. She is a devoted physician competent in the diagnosis and treatment of gastrointestinal conditions and proficient at endoscopic evaluation of upper and lower gastrointestinal tract disorders

Ashley Prasad is a board-certified physician assistant in the Stamford Health Medical Group gastroenterology department. Ashley has clinical experience in both inpatient and outpatient settings. Prior to her current position, she has worked in neurocritical care, neurosurgery, and epilepsy. Ashley received her Master of Science Degree in Physician Assistant Studies at Hofstra University. She is passionate about patient-centered care, education, and wellness. Ashley is certified in advanced cardiac life support.

Dr. Rozenshteyn grew up in northern New Jersey before moving to the Boston area for college at Brandeis University, followed by medical school at Tufts University School of Medicine. After medical school, he moved to New York City to complete his internal medicine training at Mount Sinai Beth Israel, where he was also selected to complete a chief residency year. He then stayed within the health system and completed his gastroenterology fellowship at Mount Sinai Morningside & West, where he was chosen to serve as chief fellow during his final year of training. Dr. Rozenshteyn strives to treat patients with empathy and respect, while applying evidence-based medicine to his care approach. During his free time, Dr. Rozenshteyn enjoys traveling, playing tennis, rooting on his favorite sports teams, and spending time with his family.