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I'd assume GWT is returning a Soft 404 for those pages. Have you considered writing content for the page to express the need to log in for users to reach whatever important content is available via an account? That way Google sees that it is a real page and not so empty as to make them think it has 404'd. Or if there is no reason for Google to be indexing this page in the first place you could mark it NoIndex.

The other big one is "sex therapy la" from centerforheatlhysex.com/sex-therapy. Thanks!

Hey Joshua - I'm personally fine with those sites as long as they are mixed in with more traditional, industry related guest blog posts. I've used a guest blog posting company called guestblogposter.com and have been pretty happy with the results.  They get a nice range of guest blog posts and the price is pretty reasonable. Bryan