Visitors will be issued a pass, which must be worn at all times while in the Medical Center. Passes may be obtained at Lexington Avenue entrance or Parkview Patient Tower 1 and 2 as follows: Lexington Avenue - 7:30 a.m. to 6 p.m. Monday-Friday. Parkview Patient Tower 1 - 7:30 a.m. to 6 p.m. Monday-Friday..