Contact Us Primary Care of Long Island Contact us today to make your medical appointment in Lindenhurst or Brentwood, our staff is waiting to take care of you and the ones you love. Web Site First Name Last Name Email Phone Comments Lindenhurst 791 North Wellwood AveLindenhurst, NY 11757Phone:631-957-2200 Brentwood 820 Suffolk AvenueBrentwood, NY, 11717Phone: 631-229-9700