Text "Hello" to 474-624 to get more info. Whether you are a young professional, an established long-term resident, or a parent with babies or young or adolescent children, Mount Sinai Doctors in Williamsburg welcomes you. Our doctors practice family medicine. This means we strive to be part of the community we serve and improve the lives of our patients. Supported by a staff of medical assistants and nurses, we collaborate in helping you develop healthy habits, and by diagnosing and treating existing conditions, and providing preventative care.