The only thing that stays the same with Google is that they'll constantly be changing things.
The latest Google redesign update has changed how we have to deal with Title tags. As we've seen with Title tags, they're an important part of your SEO, as the Title tag will often be what displays in the Google search results.
With the latest Google change, they've reduced the number of characters that display in the search results. This can affect what your patients see in the search results and affect your click-through-rate.
Here's a good analysis of the new changes on Moz.
For more information about chiropractic SEO, please see our Complete Guide to Chiropractic Marketing.