Miechelle Lee O'Brien, MD

Neesha Bastien is a board-certified PA. She earned her degree from City College of New York in 2014. Neesha began her career in hospital medicine at Montefiore Medical Center. In 2018, she joined the gastroenterology practice at Nuvance Health. Neesha manages acute and chronic gastrointestinal diseases.

Dr. David Barenberg is an experienced and skilled gastroenterologist with lifetime board certification after training at the Harvard Medical School gastroenterology department at the Brigham and Women's Hospital in Boston. An expert in colonoscopy and endoscopy, he is also equally respected for his diagnostic and disease management skills. He treats his patients with concern and respect. When mentoring junior physicians, he has often been heard to say, "when you are caring for patients, you must always do your very best, every time. You must focus not only on the illness, but on the human being." Dr. Barenberg was named a 2023 Top Doc by Castle Connolly.

Dr. Liu-Burdowski is a board-certified gastroenterologist with additional sub-specialty training in advanced therapeutic endoscopy and endoscopic surgery. She is dedicated to providing honest and compassionate care to all patients and building strong, as well as lasting, therapeutic relationships. She specializes in pancreatico-biliary diseases, GI malignancies, and endoscopic management of esophageal and gastric dysmotility disorders. Dr. Liu prides herself in providing a comfortable environment for her patients and their loved ones, and to treat every patient with the dignity and respect that they deserve. In her free time, she enjoys exercising, exploring new adventures and spending time with her family.