Mount Sinai Doctors Long Island Five Towns is a multispecialty group practice located in the town of Hewlett on the South Shore of Long Island. Mount Sinai is pleased to bring our and highly-trained physicians as well as our skilled nurses, nurse practitioners, physician assistants, medical assistants, and patient care associates to the South Shore community. Our practice provides local and convenient access to the specialists, services, and quality care that the Mount Sinai network has to offer. Our providers work together in an integrated approach to efficiently understand the full picture of a patient’s care.