Beware of this Dr. and his office! He only refers you to others and his office will«get approval codes» for tests with your insurance then, when the bill comes, you have a heart attack! I paid $ 25 for an MRI a year and half ago with Northwestern Hospital via another doctor THIS year I had another MRI at the same place on the same machine thru Dr. Natarajan and was charged more than $ 1000 after it was«approved» through insurance — ??? They had no comment when I called to question this. Stay away!!!