The Resident (2011)

When a young doctor suspects she may not be alone in her new Brooklyn loft, she learns that her landlord has formed a frightening obsession with her.

Director: Antti Jokinen
Writers: Antti Jokinen, Robert Orr

Cast:
Jeffrey Dean Morgan … Max
Hilary Swank … Dr. Juliet Dermer
Christopher Lee … August
Lee Pace … Jack
Michael Massee … Security tech
Penny Balfour … Meth Addict
Kisha Sierra … Good looking girl
Peggy Miley … Mrs. Rosenbaum
Michael Showers … August's ER Doctor
Alexandria Morrow … Art Model
Cliff Gravel … E. R. Patient
Sandi K Shelby … E.R. Doctor

http://www.imdb.com/title/tt1334102/