University Physicians Group A Division of Northwell Health Physician Partners. Toggle navigation. Home; About Us; Resources ... Patient Portal; Contact Us; Find A Physician. UPG. Choose your UPG location. click on the link to enter the patient portal. Search by. City: Zip Code: Location Address. 8012 Third Avenue, Brooklyn, New York, 11209 ...Home‧About Us‧Resources‧Career‧Patient Portal‧Contact Us.