I've attached a cleaned up draft of the taxonomy extension for provider organizations. I'd love to get your thoughts and feedback on the content (typo's, wording, visuals, etc.). Please feel free to post your comments here or to reach out to me directly.
While there are multiple approaches to defining a taxonomy, a small subset group of us have discussed and thought this would be a great starting point for 1.0. If you have detailed questions then I'd be happy to jump on a call to discuss more in-depth.