ETA: I found information on it online finally. It was on the Grand Concourse and closed in 1976.

At one time in the Bronx there used to be a hopsital called Central Maternity Hospital. I used to live in the Bronx in the late 90's and early 2000's but never heard of it. A friend (who is in her late 40's) was born there and wanted to get some information on it but I think either this hospital closed or was merged into another one. If anyone has heard of this hospital and remembers or knows someone that remembers what street and section of the Bronx this was in, please let me know. My friend is calling the Fordham Library Center in the Bronx now to get more information as well but if it's busy there they'll just tell her to come in to find out. Thanks.