I talked to Kremcheck in our company box a while two years ago in 2012 when Votto was having the knee problems. He was nothing short of completely misleading in the info that he put forth. I looked like a complete IDIOT to a couple close friends in relaying that info to them because what followed was nothing short of inconsistent from what Doc Hollywood himself told me. Now, it was none of my business in the first place but he chose to tell me about Votto; more than I ever expected him to and how the surgery went; etc. I would have been fine with "I can't talk about it" rather than getting info that is totally misleading.
As for what he's reported on various injuries, there's no doubt he's been as inaccurate as your local weatherman when it comes to his thoughts on a player's injuries. I don't doubt he's highly regarded and all that but you have to wonder how much an old-boys network it is. He's a big name in the game doesn't necessarily mean he's the best or close to it. That goes with anything.