Honestly Luke, don't worry about keyword density and the number of times a keyword (or how many keywords) you are targeting/using per page. In my opinion I typically only target 1 main keyword and a couple variations of the keywords. Dont get hung up on using it a certain % of time. Make sure your content is written well, informative, and helps increase conversions. Google is really starting to crack the whip.
My rule of thumb is this:
Title: Leading Plastic Surgeon in Seattle, WA | Dr. John Smith Plastic Surgery
Meta Description: Dr. John Smith specialize is an awesome plasitc sugeon who can help you acheive your aesthetic goals.
Keyword Tags -DO NOT USE
H1: Plastic Surgeon in Seattle, Wa
H2: How much does Plastic Surgery Cost?
Body of Content add location maybe once and write good 100% unique content.
Hope this helps, let me know if you have any other questions.
