Harbor View Medical Services based in Long Island, NY, is a wholly owned non-profit physician practice of John T. Mather Hospital that offers a full healthcare spectrum of primary care, internal medicine and specialty care services. Our physicians practice in a patient centered medical home environment and use population health management techniques. Our board certified medical physicians are trained in Cardiology, Endocrinology, Family and Internal Medicine, Neurology, and Rheumatology and Vascular. Harbor View Medical Services provides up-to-date diagnostic and therapeutic services using the most innovative technology available. Harbor View Medical Services, PC - Mather Primary Care provides comprehensive, compassionate, and continuous care to patients and their family members at four convenient locations in Port Jefferson, Rocky Point and Stony Brook. Our physicians are skilled in comprehensive first contact and continuing care for patients with any undiagnosed sign, symptom, or health concern not limited by problem origin (biological, behavioral, or social), organ system, or diagnosis.