NPOV
This biography had some serious POV issues. In order appearing in the article:
 The weasel word "orders" (does he have a military history we don't know about?)
 An entire paragraph of paraphrases and out-of-context quotes from a single Village Voice piece. The quotes were mangled to make his views appear more extreme, like "Zucker believes that failing to control a child's gender expression at a young age and seek early counseling for transgendered behavior is neglectful." instead of "can be considered 'some type of emotional neglect.'".
 Guilt by association in comparing his methods to those of Dr. John Money, which is explicitly forbidden by Wikipedia:BLP#Balance. Dr. Money is not the only representative clinician; it appears he was named due to his famously poor outcome with David Reimer.
 Another guilt by association in discussing a study by Dr. Robert Spitzer (which he only published). Does the World Health Organization's opinion on a study written by someone else really belong in this article? I added context from the Times piece cited.
 Some cherry picking of negative quotes from news and journal articles, which I balanced with positive ones or responses from Zucker.
 Another guilt by association with Ray Blanchard. This is an article about Kenneth Zucker; the reader is not looking for the controversy over independent work by Ray Blanchard.