When I came upon this book I had no idea that so much of Hippocrates' writings survived. So many other ancient Greek writers survive only in fragments. I was blown away that this book contained over 300 pages of ancient Greek text, and even more text survives not contained in this book.
One can actually read and get some insight into how physicians in ancient Greece were trained and how they thought about healthcare. Having said that and having read through the entire book, I can confidently say that large parts of the book don't make a "good read", being either repetitive or obsessed with certain observations or ideas that the writer is trying to prove.
I have a hard time imagining anyone other than a physician with 10+ years of experience (this author) or a determined scholar trying to slog through the texts and getting something out of it. There are not a lot of areas where a modern day physician can read Hippocrates to gain wisdom into current day healthcare. There are definitely a few, but they are pretty well buried and no longer than a sentence or two.
It may take some thought to realize this, but Hippocrates' writings were probably so important because they are such an extensive listing of healthcare issues. Almost all of what Hipporates has to say about why things are the way there are is wrong, but he is pretty good, at least, when it comes to observation and writing down what he sees. The section on embryology, all observational, was fairly amazing.
Keep in mind that much of what ancient physicians did was tell people if they were going to get better or not, so in this respect, the book was good in informing the ancient physician, and in this area, I did get a feeling that Hippocrates did convey some still relevant observations. Treatment was less of an issue, though there was a section on broken bones, setting them, which I found difficult to read, though an orthopedic surgeon reading this section may get more out of it.
Lastly, (FYI) even though the writings in this edition are attributed to Hippocrates, no one is sure that he wrote any of them. The writings may just be from his school or followers. Thankfully, it was a good, very readable translation.