I don't work for NYU Med, but I did go through their new grad interview process several weeks ago. First, you are screened to see if you meet the qualifications for an interview (BSN, 3.5 GPA, no C's in science pre-req courses) and depending on availability, are scheduled to attend their Nurse Residency Pre-Interview Day. You and several other applicants meet up in a group, and are led to a room to take a dosage calculation exam. Afterwards, the program itself and benefits are discussed with you by a recruiter, and you are then asked what your unit preference is. Afterwards, if they can accommodate a second interview with a nurse manager of your preferred unit that day, they will, depending on availability. If not, they will call and notify you if there is a possible vacancy and interview. I know that my classmates though had mixed experiences. Some people stayed all day and interviewed with a nurse recruiter one-on-one, but I have another classmate who did not attend and instead had a phone interview.
I was fortunate that the the nurse manager of my preferred unit had an interview opening, and I was able to interview with her just a few days later. The nurse manager interviews you and then will tell the recruiter whether or not they recommend you for the position. Although I was recommended, I found that I was placed on their new hire wait list. NYU will not be hiring from Sep to Dec of this year because they are instituting a new EMR system. Resources will be going towards training people on how to use the new EMR system and unfortunately, will not be able to train new grads. However, they will be hiring people again starting next January. Since they will not hire people after August, they have been trying to over-hire these past several months. If they cannot fit you into their last orientation, they may or may not place you on their wait list for January.
I do not know about the difficulty level on getting into a specialized unit but I have a few friends that work on specialty floors and interviewing for those units was dependent on availability. I have some friends who love working at NYU and others who don't. As it is for many hospitals, some floors are better than others. I have heard that they do have a high turnover rate though. For nurses who are applying and who have more experience, I don't know if the interview process would be the same but I imagine it would be similar (first interviewing with a nurse recruiter and then a nurse manager). I would say though that my tip for people who are interviewing or who would like to get an interview is to definitely follow up with the recruiters on your status and let them know how interested you are in working for them. Following up with them goes a long way!